Color Details and Palettes for #5577BC

Details about the color Endless River

Closest web-safe match: #6666CC

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 #5577BC
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About Color Hex #5577bc

The color Endless River, with hexadecimal code #5577bc, belongs to the blue color family, the world's most universally preferred hue. Blue projects trust, stability, and intellectual calm, which is why it dominates corporate, financial, and technology branding worldwide. Additionally, it evokes emotions such as Trust, Peace, Loyalty, Integrity and Tranquility. Blue signifies tranquility and stability. In Middle Eastern cultures, it can also represent protection against the evil eye, while in Western cultures, it symbolizes calmness and reliability. With a moderate saturation of 43%, it has a softened, muted quality that lends sophistication and works well for backgrounds and secondary elements. With a mid-range lightness of 54%, it offers excellent versatility—readable as text on light backgrounds and visible as an element on dark ones. This color is ideal for designs that aim to express Trust, Peace, Loyalty, Integrity, or Tranquility. It can be effectively used in web design, branding, and marketing materials to attract attention and convey specific messages.

The RGB values for Endless River are (85, 119, 188), providing a combination of red: 85, green: 119, and blue: 188. In HSL format, it has a hue of 220.00°, saturation of 43.00%, and lightness of 54.00%.

The HSV representation includes a hue of 220.00°, saturation of 55.00%, and value of 74.00%. Its CMYK composition is cyan: 55.00%, magenta: 37.00%, yellow: 0.00%, and black: 26.00%.

The calculated luminance of #5577bc is 0.188, offering a brightness level suitable for various design requirements.

This color is not part of the web-safe color palette. The closest web-safe color to this is the color HEX #6666CC. Its contrast ratio is 4.75:1 against black and 4.42:1 against white. It works well on dark backgrounds but may be less readable on lighter ones.

In terms of color temperature, #5577bc reads as cool. When it comes to accessibility, testing against standard guidelines suggests that using black text meets typical WCAG contrast standards. Additionally, the ideal foreground color for improved legibility on #5577bc is black.

Considering its saturation and lightness, #5577bc appears more vivid and energetic, making it stand out in designs that aim to capture attention.

History, Usage, Psychology & Design Ideas for #5577BC

Endless River (#5577BC) belongs to the Blue color family.

With moderate saturation and balanced lightness, this muted tone feels sophisticated and understated. Muted hues like this excel in editorial design, professional portfolios, and interior spaces that seek calm refinement.

Historical Background

Blue's scarcity in nature made it a late addition to human color vocabulary—Homer's 'wine-dark sea' notably omits the word blue entirely. The breakthrough came with Egyptian Blue (~2200 BC) and later ultramarine from Afghan lapis lazuli, which Medieval artists hoarded for divine subjects. Synthetic ultramarine (1826) and cobalt blue democratized the color, enabling Impressionists like Monet and Renoir to paint blue-drenched landscapes affordably.

Design & Usage Tips

Blue is the most universally liked color and dominates corporate branding (Facebook, LinkedIn, IBM, Samsung). Use it to establish trust, competence, and professionalism. Lighter blues suit wellness and social apps, while darker blues convey authority and security. Avoid using blue for food branding—it suppresses appetite.

Sitting on the cool side of the spectrum (hue 220°), it promotes a feeling of calm distance and intellectual clarity, which is why cool hues dominate corporate identities, healthcare design, and productivity tools. At 43% saturation, the color has a muted, sophisticated quality that pairs well with bolder accents. It works as a background, a border, or a secondary element in layered compositions.

Psychological Impact

Blue lowers blood pressure and heart rate, promoting calm and focused thought. It signals reliability and integrity, which is why it is the default choice for banks, insurance companies, and government institutions. In UX, blue links and buttons feel intuitive because users have been trained by decades of web convention.

With a mid-range lightness of 54%, this tone is highly versatile: dark enough to serve as body text on white, yet light enough to stand out on charcoal or navy backgrounds.

Creative Design Ideas

Pair classic blue (#0047AB) with warm amber for a nautical or heritage brand. Use gradient blues (light-to-dark, top-to-bottom) for app onboarding screens that feel expansive and inviting. In data dashboards, blue is the safest primary chart color—it's distinct, professional, and colorblind-friendly.

#5577BC Color Conversions

Every way to write Endless River — copy Endless River as RGB, HSL, HSV, HWB, CMYK, OKLCH, OKLab, CIELAB, LCH, XYZ or a decimal integer. One-tap copy on every format; tap on any card to learn what it is and when to use it.

12 formats
HEX Web
#5577BC

Hexadecimal is the web’s universal color notation — two digits each for red, green and blue. Drop it straight into HTML, CSS or any design tool.

RGB Screen
rgb(85, 119, 188)

RGB is the additive Red-Green-Blue model every screen uses to emit light. The default choice for websites, apps and on-screen UI.

HSL Web
hsl(220, 43%, 54%)

HSL breaks a color into Hue, Saturation and Lightness — the most intuitive way to lighten, darken or mute a color in CSS.

HSV HSB Design
hsv(220, 55%, 74%)

HSV (also called HSB) maps Hue, Saturation and Value/Brightness. It is the model behind the color pickers in Photoshop, Figma and most design apps.

HWB CSS 4
hwb(220 33% 26%)

HWB blends a pure hue with Whiteness and Blackness — a painter-friendly model added in CSS Color 4 for quick tints and shades.

CMYK Print
cmyk(55%, 37%, 0%, 26%)

CMYK is the subtractive Cyan-Magenta-Yellow-Black ink model. Use these values when preparing artwork for a printer or commercial press.

OKLCH Modern
oklch(57.50% 0.114 263.36)

OKLCH is a modern, perceptually-uniform space (Lightness, Chroma, Hue). It powers smooth gradients and accessible palettes in today’s CSS.

OKLab Modern
oklab(57.50% -0.013 -0.113)

OKLab is the Cartesian form of OKLCH — ideal for blending and interpolating colors without the muddy midpoints older spaces produce.

CIELAB L*a*b* Perceptual
L: 50.40, a: 8.29, b: -40.00

CIELAB is a device-independent, perceptually-uniform space. It is the standard for measuring color difference (ΔE) and matching across devices.

LCH Perceptual
L: 50.40, C: 40.84, H: 281.70

LCH is CIELAB in cylindrical form — Lightness, Chroma and Hue — letting you adjust vividness and hue while staying perceptually even.

XYZ CIE Science
X: 19.42, Y: 18.76, Z: 50.17

CIE XYZ is the 1931 master space that underpins every other model here — the scientific bridge used to convert between color systems.

Decimal int Code
5601212

The 24-bit integer value of the color — handy for databases, APIs, game engines and low-level graphics code.

RGB Color Percentages for #5577bc

RGB Color Percentages for Endless River (HEX Code: #5577bc) display the relative contribution of Red, Green, and Blue in forming the color. Understanding these percentages provides insight into the color's visual balance and primary components.

This color is primarily dominated by Blue, making up 47.96% of the total composition. The complete breakdown of RGB contributions is:

Red:
21.68%
Green:
30.36%
Blue:
47.96%

This analysis highlights the influence of each primary color, offering a deeper understanding of the visual characteristics of Endless River.

CMYK Ink Levels & Print Guide for #5577bc

CMYK Ink Levels for Endless River (HEX Code: #5577bc) provide a breakdown of the percentages of Cyan, Magenta, Yellow, and Black inks needed for accurate print reproduction. The composition of Endless River prominently features Cyan, reflecting its dominant color characteristic. This information is invaluable for optimizing ink usage and achieving precise color results in printed materials.

The exact CMYK values are: Cyan: 54.79%, Magenta: 36.7%, Yellow: 0%, and Black: 26.27%.

Luminance & Contrast for #5577BC

Relative luminance gauges how bright Endless River is, while the WCAG contrast ratios show how legible black or white text is on it — and which accessibility levels (AA / AAA) it passes.

Relative luminance 0.188
0 · dark1 · light
Aa
Black text 4.75:1
AA AAA Large
Aa
White text 4.42:1
AA AAA Large

Quick CSS Snippets for #5577BC

Copy-and-paste CSS for Endless River — backgrounds, text, borders and a custom property. Each line is ready to drop into your stylesheet.

Background background-color: #5577BC;
Text color: #5577BC;
Border border: 2px solid #5577BC;
RGB background-color: rgb(85, 119, 188);
HSL background-color: hsl(220, 43%, 54%);
Variable --color: #5577BC;

#5577bc Monochrome Palette

The Monochrome Palette consists of shades created by adjusting the brightness. These include lighter, original, and darker shades of the color. This layout helps to visualize the color's range and its potential use in design.

#eef1f8
#d5ddee
#bbc9e4
#a2b4da
#88a0d0
#6f8bc6
#5577bc Original
#4865a0
#3b5384
#2f4167
#22304b
#151e2f
#090c13

#5577bc Complementary Palette

The Complementary Palette is made up of two colors that sit opposite each other on the color wheel. These colors create high contrast and vibrant designs, making them perfect for attention-grabbing elements and dynamic visuals.

#5577bc Original
#bc9b57

#5577bc Analogic Palette

The Analogic Palette consists of colors that are next to each other on the color wheel. These colors typically create harmonious and subtle designs, often used to evoke calmness and unity in your visual projects.

#5577bc Original
#6857bc
#57abbc
#9b57bc
#57bc9b
#bc57ab
#57bc68

#5577bc Triadic Palette

The Triadic Palette is made up of three colors evenly spaced on the color wheel. This combination provides a vibrant and balanced color scheme, often used for dynamic and energetic designs while maintaining harmony.

#5577bc Original
#bc5779
#79bc57

#5577bc Quad Palette

The Quad Palette, also known as tetradic, consists of four colors evenly spaced on the color wheel. This combination offers a diverse and bold color scheme, ideal for creating rich, complex designs with multiple accents while still maintaining balance.

#5577bc Original
#bc57ab
#bc9b57
#57bc68

Color Blindness Simulation for #5577bc

Colors are perceived differently by individuals with various forms of color blindness. Use the dropdown below to see how this color may look through the eyes of someone with color vision deficiency. Explore how Endless River (#5577bc) might appear to people with different visual experiences, and gain deeper insights into color accessibility for your designs!

Each color box displays a "Friendly" or "Not Friendly" tag in the bottom-right corner. A "Friendly" tag indicates that the color difference is distinguishable to individuals with the specific type of color blindness. Conversely, a "Not Friendly" tag means that the color difference might not be distinguishable, potentially causing accessibility issues in your design.

Normal Vision

Deuteranopia (Green Weakness)

Friendly

Protanopia (Red Weakness)

Friendly

Tritanopia (Blue-Yellow Weakness)

Not Friendly

Achromatopsia (Total Color Blindness)

Not Friendly

Color Harmonies for #5577bc

Color harmonies refer to the visually pleasing combinations of colors that are derived from specific relationships on the color wheel. These harmonious schemes, such as complementary, triadic, and analogous colors, create a balanced and engaging visual experience in design.

Complementary

Analogous

Triadic

Tetradic (Quad)

#5577BC Nearby Colors

A handful of colors just a step away from #5577BC — each one nudges the brightness, richness, or shade a little while still feeling like the same color. Use the buttons on any swatch to copy its hex or open its full color page.

#6688cc Marina
#4466aa Starstruck
#7799dd Wisteria Blue
#335599 Nightly Activities
#4477cc Serenity’s Reign
#6677aa Flood
#6677bb Flood
#3377bb Mykonos

Colors Similar to #5577bc

These colors are close neighbours of #5577BC in the RGB color space. Each subtle variation can produce a noticeably different mood in your design while remaining harmonious with the original Blue tone.

#5677bc Endless River
#5578bc Endless River
#5577bd Endless River
#5477bc Endless River
#5576bc Endless River
#5577bb Endless River
#6677bc Flood
#5588bc Sea Salt Rivers
#5577cd Serenity’s Reign
#4477bc Sail On
#5566bc God of Rain
#5577ab Endless River

Looking for more Blue shades? Browse Blue colors →

Explore Vibrant Images Featuring Endless River (#5577bc)

Discover a vibrant gallery of images that not only showcase the captivating hue of Endless River, but also embody its unique mood and personality. Each carefully curated photo is selected to highlight the richness and diversity of this color, offering inspiration for design, art, and creative projects.