Tan4
tan4 · #8B5A2B
HEX
#8B5A2B
RGB
rgb(139, 90, 43)
CMYK
cmyk(0%, 35%, 69%, 45%)
HSL
hsl(29, 53%, 36%)
LAB
lab(42.7, 15.5, 34.7)
What is Tan4?
Tan4 is the tan4 reference in the X11 named colors. Its sRGB value is #8B5A2B (rgb 139, 90, 43). It sits in the brown family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Tan4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Tan4
An 11-step tonal scale derived from Tan4 (#8B5A2B). 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
#F6F2EE
#F6F2EE
100
#ECE5DD
#ECE5DD
200
#DACABB
#DACABB
300
#C5AD95
#C5AD95
400
#A88360
#A88360
500
#8B5A2B
#8B5A2B
600
#764D25
#764D25
700
#5A3B1C
#5A3B1C
800
#3F2913
#3F2913
900
#23170B
#23170B
950
#110B05
#110B05
Lighter tints (mixed with white)
15%
#A48673
30%
#B8A499
45%
#CABDB5
60%
#DAD1CD
75%
#E9E4E1
Darker shades (mixed with black)
15%
#815327
30%
#764C23
45%
#69431E
60%
#5A3919
75%
#482C12
Color harmonies for Tan4
Classic color-theory harmonies derived from rotating the hue of Tan4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#8B5A2B
#8B5A2B
#2B5D8C
#2B5D8C
Triadic
Three colors 120° apart
#8B5A2B
#8B5A2B
#2B8C5A
#2B8C5A
#5A2B8C
#5A2B8C
Analogous
Two neighbors ±30° on the wheel
#8C2B2D
#8C2B2D
#8B5A2B
#8B5A2B
#8C8B2B
#8C8B2B
Split-complementary
Base + two colors flanking its complement
#8B5A2B
#8B5A2B
#2B8C8B
#2B8C8B
#2B2D8C
#2B2D8C
Tetradic
Two complementary pairs
#8B5A2B
#8B5A2B
#5D8C2B
#5D8C2B
#2B5D8C
#2B5D8C
#5A2B8C
#5A2B8C
Square
Four colors evenly spaced 90° apart
#8B5A2B
#8B5A2B
#2D8C2B
#2D8C2B
#2B5D8C
#2B5D8C
#8B2B8C
#8B2B8C
Tan4 in every color space
Full conversion of Tan4 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
#8B5A2B
RGB
rgb(139, 90, 43)
CMYK
cmyk(0%, 35%, 69%, 45%)
HSL
hsl(29, 53%, 36%)
HSV
hsv(29, 69%, 55%)
HWB
hwb(29 17% 45%)
CIE Lab
lab(42.7 15.5 34.7)
OKLCH
oklch(51.2% 0.090 62.2)
XYZ (D65)
xyz(14.74, 12.98, 4.01)
Copy-ready code for Tan4
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: #8B5A2B;
background-color: #8B5A2B;CSS variable
:root {
--color-tan4: #8B5A2B;
}Tailwind config
// tailwind.config.js
colors: {
'tan4': '#8B5A2B',
}Sass
$color-tan4: #8B5A2B;Swift UIColor
UIColor(red: 0.545, green: 0.353, blue: 0.169, alpha: 1.0)Android XML
<color name="tan4">#8B5A2B</color>Closest match in every color system
The nearest Tan4 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 X11 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 8001
#955F20
Ochre brown
RAL 1011
#8A6642
Brown beige
RAL 8023
#A65E2E
Orange brown
RAL 8008
#6F4F28
Olive brown
RAL 8024
#79553D
Beige brown
RAL 1036
#705335
Pearl gold
FAQ about Tan4
What is the HEX code for Tan4?
Tan4 (tan4) has the HEX code #8B5A2B. In RGB it is rgb(139, 90, 43), and in CMYK it is cmyk(0%, 35%, 69%, 45%).
What is the OKLCH value of Tan4?
Tan4 converts to oklch(0.512 0.090 62.2). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Tan4 accessible for body text?
Used as a background, Tan4 has a contrast ratio of 3.60:1 with black text and 5.84:1 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 Tan4?
The closest Pantone reference to Tan4 by ΔE2000 perceptual distance is Pantone 464 C (#8B5B29). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Tan4?
The closest RAL Classic reference to Tan4 by ΔE2000 distance is RAL 8001 (Ochre brown, #955F20). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Tan4?
The complementary color (180° opposite on the HSL color wheel) of Tan4 is #2B5D8C. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.