Brown4
brown4 · #8B2323
HEX
#8B2323
RGB
rgb(139, 35, 35)
CMYK
cmyk(0%, 75%, 75%, 45%)
HSL
hsl(0, 60%, 34%)
LAB
lab(31.4, 43.5, 26.4)
What is Brown4?
Brown4 is the brown4 reference in the X11 named colors. Its sRGB value is #8B2323 (rgb 139, 35, 35). It sits in the red 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 Brown4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Brown4
An 11-step tonal scale derived from Brown4 (#8B2323). 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
#F6EDED
#F6EDED
100
#ECDCDC
#ECDCDC
200
#DAB9B9
#DAB9B9
300
#C59191
#C59191
400
#A85A5A
#A85A5A
500
#8B2323
#8B2323
600
#761E1E
#761E1E
700
#5A1717
#5A1717
800
#3F1010
#3F1010
900
#230909
#230909
950
#110404
#110404
Lighter tints (mixed with white)
15%
#A47171
30%
#B89898
45%
#CAB5B5
60%
#DACCCC
75%
#E9E1E1
Darker shades (mixed with black)
15%
#812020
30%
#761C1C
45%
#691818
60%
#5A1313
75%
#480D0D
Color harmonies for Brown4
Classic color-theory harmonies derived from rotating the hue of Brown4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#8B2323
#8B2323
#238B8B
#238B8B
Triadic
Three colors 120° apart
#8B2323
#8B2323
#238B23
#238B23
#23238B
#23238B
Analogous
Two neighbors ±30° on the wheel
#8B2357
#8B2357
#8B2323
#8B2323
#8B5723
#8B5723
Split-complementary
Base + two colors flanking its complement
#8B2323
#8B2323
#238B57
#238B57
#23578B
#23578B
Tetradic
Two complementary pairs
#8B2323
#8B2323
#8B8B23
#8B8B23
#238B8B
#238B8B
#23238B
#23238B
Square
Four colors evenly spaced 90° apart
#8B2323
#8B2323
#578B23
#578B23
#238B8B
#238B8B
#57238B
#57238B
Brown4 in every color space
Full conversion of Brown4 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
#8B2323
RGB
rgb(139, 35, 35)
CMYK
cmyk(0%, 75%, 75%, 45%)
HSL
hsl(0, 60%, 34%)
HSV
hsv(0, 75%, 55%)
HWB
hwb(0 14% 45%)
CIE Lab
lab(31.4 43.5 26.4)
OKLCH
oklch(42.5% 0.140 25.4)
XYZ (D65)
xyz(11.55, 6.81, 2.30)
Copy-ready code for Brown4
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: #8B2323;
background-color: #8B2323;CSS variable
:root {
--color-brown4: #8B2323;
}Tailwind config
// tailwind.config.js
colors: {
'brown4': '#8B2323',
}Sass
$color-brown4: #8B2323;Swift UIColor
UIColor(red: 0.545, green: 0.137, blue: 0.137, alpha: 1.0)Android XML
<color name="brown4">#8B2323</color>Closest match in every color system
The nearest Brown4 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 3003
#9B111E
Ruby red
RAL 3011
#781F19
Brown red
RAL 3002
#A2231D
Carmine red
RAL 3004
#75151E
Purple red
RAL 3001
#A52019
Signal red
RAL 3013
#A12312
Tomato red
FAQ about Brown4
What is the HEX code for Brown4?
Brown4 (brown4) has the HEX code #8B2323. In RGB it is rgb(139, 35, 35), and in CMYK it is cmyk(0%, 75%, 75%, 45%).
What is the OKLCH value of Brown4?
Brown4 converts to oklch(0.425 0.140 25.4). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Brown4 accessible for body text?
Used as a background, Brown4 has a contrast ratio of 2.36:1 with black text and 8.89:1 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 Brown4?
The closest Pantone reference to Brown4 by ΔE2000 perceptual distance is Pantone 187 C (#A6192E). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Brown4?
The closest RAL Classic reference to Brown4 by ΔE2000 distance is RAL 3003 (Ruby red, #9B111E). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Brown4?
The complementary color (180° opposite on the HSL color wheel) of Brown4 is #238B8B. 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.