Color Details and Palettes for #400080

Details about the color Indigo

Closest web-safe match: #330099

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 #400080
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About Color Hex #400080

The color Indigo, with hexadecimal code #400080, lands in the purple family, historically reserved for royalty due to the extreme cost of Tyrian dye. Purple activates imagination and spiritual contemplation, blending red's passion with blue's serenity. Additionally, it evokes emotions such as Luxury, Royalty, Spirituality, Imagination and Wisdom. Purple is often linked to creativity, luxury, and spirituality. In Western cultures, it is also associated with ambition and wealth. Indigo and violet have long signified royalty and nobility. With a high saturation of 100%, this color is intensely vivid—demanding attention and ideal for focal elements like buttons, banners, and brand marks. Its low lightness of 25% produces a deep, rich appearance—conveying gravity and luxury, particularly effective in dark-mode designs and premium packaging. This color is ideal for designs that aim to express Luxury, Royalty, Spirituality, Imagination, or Wisdom. It can be effectively used in web design, branding, and marketing materials to attract attention and convey specific messages.

The RGB values for Indigo are (64, 0, 128), providing a combination of red: 64, green: 0, and blue: 128. In HSL format, it has a hue of 270.00°, saturation of 100.00%, and lightness of 25.00%.

The HSV representation includes a hue of 270.00°, saturation of 100.00%, and value of 50.00%. Its CMYK composition is cyan: 50.00%, magenta: 100.00%, yellow: 0.00%, and black: 50.00%.

The calculated luminance of #400080 is 0.026, 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 #330099. Its contrast ratio is 1.53:1 against black and 13.73:1 against white. It works well on light backgrounds but may be challenging on darker ones.

In terms of color temperature, #400080 reads as cool. When it comes to accessibility, testing against standard guidelines suggests that using white text meets typical WCAG contrast standards. Additionally, the ideal foreground color for improved legibility on #400080 is white.

Considering its saturation and lightness, #400080 appears more vivid and energetic, making it stand out in designs that aim to capture attention.

History, Usage, Psychology & Design Ideas for #400080

Indigo (#400080) belongs to the Purple color family.

This deep, saturated shade conveys authority and richness. Deep tones are favored in luxury packaging, evening-event branding, and dark-mode interfaces where they provide dramatic contrast against lighter elements.

Historical Background

Tyrian purple—derived from the mucus of Murex sea snails—required 12,000 snails to produce just 1.5 grams of dye, making it the most expensive substance in the ancient world. Roman emperors decreed it exclusive to royalty, and Byzantine empresses gave birth in a porphyry-lined chamber so children could be 'born in the purple.' This legacy of exclusivity persists: purple remains shorthand for luxury and prestige.

Design & Usage Tips

Purple excels in beauty, wellness, and premium lifestyle branding. Lighter purples (lavender, lilac) suit self-care and floral products, while saturated purples project confidence and creativity. Pair purple with mint green for a fresh contrast, or with charcoal for understated elegance.

Sitting on the cool side of the spectrum (hue 270°), it promotes a feeling of calm distance and intellectual clarity, which is why cool hues dominate corporate identities, healthcare design, and productivity tools. At 100% saturation, this is a highly vivid color that demands attention. Use it where maximum visual impact is needed—feature banners, accent buttons, and data-visualization highlights.

Psychological Impact

Purple activates imagination and spiritual contemplation. It blends red's passion with blue's calm, creating a sense of creative tension. In marketing, purple appeals to audiences seeking uniqueness, quality, and a touch of the mystical.

Its low lightness of 25% gives it a deep, intense presence. Deep tones like this excel as dark-mode backgrounds, header bars, and anywhere a sense of gravity or luxury is desired.

Creative Design Ideas

Use deep purple backgrounds with metallic gold or rose-gold typography for luxury brand identities. Create purple-to-pink gradients for creative agency hero sections. In app design, purple primary buttons with white text feel premium and distinctive against light backgrounds.

#400080 Color Conversions

Every way to write Indigo — copy Indigo 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
#400080

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(64, 0, 128)

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(270, 100%, 25%)

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(270, 100%, 50%)

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(270 0% 50%)

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(50%, 100%, 0%, 50%)

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(32.21% 0.176 295.82)

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

OKLab Modern
oklab(32.21% 0.077 -0.158)

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: 18.58, a: 50.16, b: -55.23

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

LCH Perceptual
L: 18.58, C: 74.61, H: 312.25

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

XYZ CIE Science
X: 6.01, Y: 2.65, Z: 20.62

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
4194432

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

RGB Color Percentages for #400080

RGB Color Percentages for Indigo (HEX Code: #400080) 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 66.67% of the total composition. The complete breakdown of RGB contributions is:

Red:
33.33%
Green:
0%
Blue:
66.67%

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

CMYK Ink Levels & Print Guide for #400080

CMYK Ink Levels for Indigo (HEX Code: #400080) provide a breakdown of the percentages of Cyan, Magenta, Yellow, and Black inks needed for accurate print reproduction. The composition of Indigo prominently features Magenta, 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: 50%, Magenta: 100%, Yellow: 0%, and Black: 49.8%.

Luminance & Contrast for #400080

Relative luminance gauges how bright Indigo 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 0.026
0 · dark1 · light
Aa
Black text 1.53:1
AA AAA Large
Aa
White text 13.73:1
AA AAA Large

Quick CSS Snippets for #400080

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

Background background-color: #400080;
Text color: #400080;
Border border: 2px solid #400080;
RGB background-color: rgb(64, 0, 128);
HSL background-color: hsl(270, 100%, 25%);
Variable --color: #400080;

#400080 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.

#ece5f2
#cfbfdf
#b399cc
#9673b9
#794da6
#5d2693
#400080 Original
#36006d
#2d005a
#230046
#1a0033
#100020
#06000d

#400080 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.

#400080 Original
#408000

#400080 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.

#400080 Original
#800080
#000080
#800040
#004080
#800000
#008080

#400080 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.

#400080 Original
#804000
#008040

#400080 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.

#400080 Original
#800000
#408000
#008080

Color Blindness Simulation for #400080

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 Indigo (#400080) 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)

Not Friendly

Protanopia (Red Weakness)

Not Friendly

Tritanopia (Blue-Yellow Weakness)

Not Friendly

Achromatopsia (Total Color Blindness)

Not Friendly

Color Harmonies for #400080

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)

#400080 Nearby Colors

A handful of colors just a step away from #400080 — 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.

#551188 Intergalactic Settlement
#330077 Galactic Federation
#662299 Wild Violet
#220066 The Vast of Night
#440088 Indigo
#441177 Indigo
#550077 Velvet Vortex
#002288 Lost in Heaven

Colors Similar to #400080

These colors are close neighbours of #400080 in the RGB color space. Each subtle variation can produce a noticeably different mood in your design while remaining harmonious with the original Purple tone.

#410080 Indigo
#400180 Indigo
#400081 Indigo
#3f0080 Indigo
#40007f Indigo
#510080 Indigo
#401180 Indigo Static
#400091 Space Battle Blue
#2f0080 Galactic Federation
#40006f Galactic Federation
#480080 Indigo
#400880 Indigo

Looking for more Purple shades? Browse Purple colors →

Explore Vibrant Images Featuring Indigo (#400080)

Discover a vibrant gallery of images that not only showcase the captivating hue of Indigo, 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.