Sienna
sienna · #A0522D
HEX
#A0522D
RGB
rgb(160, 82, 45)
CMYK
cmyk(0%, 49%, 72%, 37%)
HSL
hsl(19, 56%, 40%)
LAB
lab(43.8, 29.3, 35.6)
What is Sienna?
Sienna is the sienna reference in the CSS Named Colors. Its sRGB value is #A0522D (rgb 160, 82, 45). It sits in the brown family. The 147 named colors defined by the W3C CSS Color Module Level 4 specification — usable directly in CSS as keywords like 'crimson' or 'rebeccapurple'. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Sienna as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Sienna
An 11-step tonal scale derived from Sienna (#A0522D). Click any swatch to copy its HEX. Use these as a starting point for design tokens, hover states, and disabled states in a design system.
50
#F7F1EE
#F7F1EE
100
#F0E3DD
#F0E3DD
200
#E1C8BC
#E1C8BC
300
#D0A996
#D0A996
400
#B87D62
#B87D62
500
#A0522D
#A0522D
600
#884626
#884626
700
#68351D
#68351D
800
#482514
#482514
900
#28150B
#28150B
950
#130A05
#130A05
Lighter tints (mixed with white)
15%
#B38273
30%
#C3A299
45%
#D2BBB5
60%
#DFD0CD
75%
#ECE3E1
Darker shades (mixed with black)
15%
#954C29
30%
#884525
45%
#7A3D20
60%
#69341A
75%
#542813
Color harmonies for Sienna
Classic color-theory harmonies derived from rotating the hue of Sienna. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#A0522D
#A0522D
#2D7B9F
#2D7B9F
Triadic
Three colors 120° apart
#A0522D
#A0522D
#2D9F51
#2D9F51
#512D9F
#512D9F
Analogous
Two neighbors ±30° on the wheel
#9F2D42
#9F2D42
#A0522D
#A0522D
#9F8A2D
#9F8A2D
Split-complementary
Base + two colors flanking its complement
#A0522D
#A0522D
#2D9F8A
#2D9F8A
#2D429F
#2D429F
Tetradic
Two complementary pairs
#A0522D
#A0522D
#7B9F2D
#7B9F2D
#2D7B9F
#2D7B9F
#512D9F
#512D9F
Square
Four colors evenly spaced 90° apart
#A0522D
#A0522D
#429F2D
#429F2D
#2D7B9F
#2D7B9F
#8A2D9F
#8A2D9F
Sienna in every color space
Full conversion of Sienna across the color spaces designers and developers actually use — including OKLCH (the perceptually-uniform space that powers Tailwind v4 and CSS Color Module Level 4) and HWB.
HEX
#A0522D
RGB
rgb(160, 82, 45)
CMYK
cmyk(0%, 49%, 72%, 37%)
HSL
hsl(19, 56%, 40%)
HSV
hsv(19, 72%, 63%)
HWB
hwb(19 18% 37%)
CIE Lab
lab(43.8 29.3 35.6)
OKLCH
oklch(52.6% 0.115 44.6)
XYZ (D65)
xyz(17.99, 13.70, 4.18)
Copy-ready code for Sienna
Drop-in snippets for CSS, Tailwind, Sass, iOS Swift, and Android XML. Click the copy button on any snippet to put it on your clipboard.
CSS
color: #A0522D;
background-color: #A0522D;CSS variable
:root {
--color-sienna: #A0522D;
}Tailwind config
// tailwind.config.js
colors: {
'sienna': '#A0522D',
}Sass
$color-sienna: #A0522D;Swift UIColor
UIColor(red: 0.627, green: 0.322, blue: 0.176, alpha: 1.0)Android XML
<color name="sienna">#A0522D</color>Closest match in every color system
The nearest Sienna equivalent in every other color system on this site, ranked by ΔE2000 perceptual distance. Useful when translating between design-system, web-standard, and industrial color references.
Closest in CSS Named Colors
Top 6 ΔE2000-closest entries within the same collection.
Closest Pantone matches
Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.
Closest RAL Classic matches
Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.
RAL 8023
#A65E2E
Orange brown
RAL 8004
#8E402A
Copper brown
RAL 2001
#C93C20
Red orange
RAL 8001
#955F20
Ochre brown
RAL 3000
#AF2B1E
Flame red
RAL 8024
#79553D
Beige brown
FAQ about Sienna
What is the HEX code for Sienna?
Sienna (sienna) has the HEX code #A0522D. In RGB it is rgb(160, 82, 45), and in CMYK it is cmyk(0%, 49%, 72%, 37%).
What is the OKLCH value of Sienna?
Sienna converts to oklch(0.526 0.115 44.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Sienna accessible for body text?
Used as a background, Sienna has a contrast ratio of 3.74:1 with black text and 5.62:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use white text and verify in real UI context.
What is the closest Pantone to Sienna?
The closest Pantone reference to Sienna by ΔE2000 perceptual distance is Pantone 160 C (#A1561C). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Sienna?
The closest RAL Classic reference to Sienna by ΔE2000 distance is RAL 8023 (Orange brown, #A65E2E). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Sienna?
The complementary color (180° opposite on the HSL color wheel) of Sienna is #2D7B9F. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
CSS Named Colors (CSS Color Module Level 4)
The 147 named colors defined by the W3C CSS Color Module Level 4 specification. Origin: VGA (16) + X11 (rest) + 'rebeccapurple'. Use as a reference for web color names that all browsers natively support. Names like 'crimson' or 'rebeccapurple' work as CSS values without any framework.
- Source type
- derived
- Confidence
- high
- License
- W3C permissive document license
- Last reviewed
- 2026-05-24
Workflow tags
CSS named colors are sRGB digital values defined for browsers. For print, convert to a process-appropriate color and proof against substrate.