Color Details and Palettes for #A45520

Details about the color Sienna

Closest web-safe match: #996633

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 #A45520
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About Color Hex #a45520

The color Sienna, with hexadecimal code #a45520, sits in the orange color family, typically linked to enthusiasm, creativity, and warmth. Orange hues stimulate appetite and social interaction, which is why food brands and community platforms favor them. Additionally, it evokes emotions such as Enthusiasm, Warmth, Motivation and Adventure. Orange is associated with spirituality and courage in some cultures, such as in Hinduism and Buddhism. In Western cultures, it often represents autumn, harvest, and creativity. At 67% saturation, this color is clearly chromatic yet balanced—colorful enough to be distinctive without overwhelming adjacent content. Its low lightness of 38% 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 Enthusiasm, Warmth, Motivation, or Adventure. It can be effectively used in web design, branding, and marketing materials to attract attention and convey specific messages.

The RGB values for Sienna are (164, 85, 32), providing a combination of red: 164, green: 85, and blue: 32. In HSL format, it has a hue of 24.00°, saturation of 67.00%, and lightness of 38.00%.

The HSV representation includes a hue of 24.00°, saturation of 80.00%, and value of 64.00%. Its CMYK composition is cyan: 0.00%, magenta: 48.00%, yellow: 80.00%, and black: 36.00%.

The calculated luminance of #a45520 is 0.145, 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 #996633. Its contrast ratio is 3.90:1 against black and 5.39:1 against white. It works well on light backgrounds but may be challenging on darker ones.

In terms of color temperature, #a45520 reads as warm. 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 #a45520 is white.

Considering its saturation and lightness, #a45520 appears more vivid and energetic, making it stand out in designs that aim to capture attention.

History, Usage, Psychology & Design Ideas for #A45520

Sienna (#A45520) belongs to the Vermilion color family.

This vivid mid-tone strikes the ideal balance between intensity and readability, making it a strong candidate for primary brand colors, interactive UI elements, and logo design where immediate recognition is essential.

Historical Background

Vermilion—a brilliant red-orange pigment—was synthesized from mercury sulfide (cinnabar) as early as 8000 BC in Anatolia. Chinese artisans perfected synthetic vermilion around the 4th century BC, using it in lacquerware, seals, and religious manuscripts. In medieval Europe, vermilion illuminated the capital letters of sacred texts, literally giving us the word 'rubric' (from Latin ruber, red).

Design & Usage Tips

Vermilion bridges the intensity of red with the warmth of orange, making it ideal for food and beverage branding where appetite appeal matters. It pairs well with dark olive green for autumnal themes or with navy blue for a classic nautical palette. Avoid using vermilion for error states, as users may confuse it with orange warnings.

Positioned on the warm side of the color wheel (hue 24°), it naturally draws the eye and creates a sense of closeness—making it effective for calls to action, food photography, and hospitality branding. With 67% saturation, it occupies a comfortable middle ground: colorful enough to be distinctive, yet restrained enough for extended reading or large surface areas.

Psychological Impact

Vermilion projects confidence, vitality, and creative ambition. Its warm red-orange lean makes it feel more approachable and less aggressive than pure red, which is why lifestyle and travel brands favor it for invitations to adventure.

With a mid-range lightness of 38%, 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

Use vermilion as a header accent stripe above charcoal photography for editorial impact. In interior design, a single vermilion accent wall energizes a neutral room. For digital products, vermilion hover states on cards create engaging micro-interactions.

#A45520 Color Conversions

Every way to write Sienna — copy Sienna 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
#A45520

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(164, 85, 32)

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(24, 67%, 38%)

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(24, 80%, 64%)

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(24 13% 36%)

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(0%, 48%, 80%, 36%)

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(53.60% 0.122 50.52)

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

OKLab Modern
oklab(53.60% 0.078 0.094)

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: 44.93, a: 28.78, b: 43.52

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

LCH Perceptual
L: 44.93, C: 52.17, H: 56.52

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

XYZ CIE Science
X: 18.82, Y: 14.49, Z: 3.17

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
10769696

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

RGB Color Percentages for #a45520

RGB Color Percentages for Sienna (HEX Code: #a45520) 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 Red, making up 58.36% of the total composition. The complete breakdown of RGB contributions is:

Red:
58.36%
Green:
30.25%
Blue:
11.39%

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

CMYK Ink Levels & Print Guide for #a45520

CMYK Ink Levels for Sienna (HEX Code: #a45520) provide a breakdown of the percentages of Cyan, Magenta, Yellow, and Black inks needed for accurate print reproduction. The composition of Sienna prominently features Yellow, 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: 0%, Magenta: 48.17%, Yellow: 80.49%, and Black: 35.69%.

Luminance & Contrast for #A45520

Relative luminance gauges how bright Sienna 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 0.145
0 · dark1 · light
Aa
Black text 3.90:1
AA AAA Large
Aa
White text 5.39:1
AA AAA Large

Quick CSS Snippets for #A45520

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

Background background-color: #A45520;
Text color: #A45520;
Border border: 2px solid #A45520;
RGB background-color: rgb(164, 85, 32);
HSL background-color: hsl(24, 67%, 38%);
Variable --color: #A45520;

#a45520 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.

#f6eee9
#e8d5c7
#dbbba6
#cda284
#bf8863
#b26f41
#a45520 Original
#8b481b
#733b16
#5a2f12
#42220d
#291508
#100903

#a45520 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.

#a45520 Original
#206ea2

#a45520 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.

#a45520 Original
#a29520
#a2202d
#6ea220
#a2206e
#2da220
#9520a2

#a45520 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.

#a45520 Original
#20a254
#5420a2

#a45520 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.

#a45520 Original
#2da220
#206ea2
#9520a2

Color Blindness Simulation for #a45520

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 Sienna (#a45520) 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)

Friendly

Achromatopsia (Total Color Blindness)

Not Friendly

Color Harmonies for #a45520

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)

#A45520 Nearby Colors

A handful of colors just a step away from #A45520 — 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.

#bb6633 Dwarven Bronze
#994411 Hot Brown
#cc7744 Cork Wood
#883300 Espresso Martini
#aa5511 Brandy Bear
#995533 Hello Fall
#995511 Mochaccino
#aa5533 Garfield

Colors Similar to #a45520

These colors are close neighbours of #A45520 in the RGB color space. Each subtle variation can produce a noticeably different mood in your design while remaining harmonious with the original Orange tone.

#a55520 Sienna
#a45620 Sienna
#a45521 Spicy Cinnamon
#a35520 Sienna
#a45420 Spicy Cinnamon
#a4551f Sienna
#b55520 Fallen Canopy
#a46620 Inca Gold
#a45531 Sienna
#935520 Chilli Con Carne
#a44420 Crimson Blaze
#a4550f Brandy Bear

Looking for more Orange shades? Browse Orange colors →

Explore Vibrant Images Featuring Sienna (#a45520)

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