Firebrick
firebrick · #B22222
HEX
#B22222
RGB
rgb(178, 34, 34)
CMYK
cmyk(0%, 81%, 81%, 30%)
HSL
hsl(0, 68%, 42%)
LAB
lab(39.1, 55.9, 37.6)
What is Firebrick?
Firebrick is the firebrick reference in the CSS Named Colors. Its sRGB value is #B22222 (rgb 178, 34, 34). It sits in the red 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 Firebrick as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Firebrick
An 11-step tonal scale derived from Firebrick (#B22222). 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
#F9EDED
#F9EDED
100
#F3DCDC
#F3DCDC
200
#E6B8B8
#E6B8B8
300
#D99191
#D99191
400
#C55959
#C55959
500
#B22222
#B22222
600
#971D1D
#971D1D
700
#741616
#741616
800
#500F0F
#500F0F
900
#2D0909
#2D0909
950
#150404
#150404
Lighter tints (mixed with white)
15%
#C07171
30%
#CD9797
45%
#D9B4B4
60%
#E4CCCC
75%
#EFE1E1
Darker shades (mixed with black)
15%
#A51F1F
30%
#971B1B
45%
#881717
60%
#751313
75%
#5E0D0D
Color harmonies for Firebrick
Classic color-theory harmonies derived from rotating the hue of Firebrick. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#B22222
#B22222
#22B4B4
#22B4B4
Triadic
Three colors 120° apart
#B22222
#B22222
#22B422
#22B422
#2222B4
#2222B4
Analogous
Two neighbors ±30° on the wheel
#B4226B
#B4226B
#B22222
#B22222
#B46B22
#B46B22
Split-complementary
Base + two colors flanking its complement
#B22222
#B22222
#22B46B
#22B46B
#226BB4
#226BB4
Tetradic
Two complementary pairs
#B22222
#B22222
#B4B422
#B4B422
#22B4B4
#22B4B4
#2222B4
#2222B4
Square
Four colors evenly spaced 90° apart
#B22222
#B22222
#6BB422
#6BB422
#22B4B4
#22B4B4
#6B22B4
#6B22B4
Firebrick in every color space
Full conversion of Firebrick 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
#B22222
RGB
rgb(178, 34, 34)
CMYK
cmyk(0%, 81%, 81%, 30%)
HSL
hsl(0, 68%, 42%)
HSV
hsv(0, 81%, 70%)
HWB
hwb(0 13% 30%)
CIE Lab
lab(39.1 55.9 37.6)
OKLCH
oklch(49.7% 0.180 26.8)
XYZ (D65)
xyz(19.22, 10.73, 2.57)
Copy-ready code for Firebrick
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: #B22222;
background-color: #B22222;CSS variable
:root {
--color-firebrick: #B22222;
}Tailwind config
// tailwind.config.js
colors: {
'firebrick': '#B22222',
}Sass
$color-firebrick: #B22222;Swift UIColor
UIColor(red: 0.698, green: 0.133, blue: 0.133, alpha: 1.0)Android XML
<color name="firebrick">#B22222</color>Closest match in every color system
The nearest Firebrick 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 3016
#B32821
Coral red
RAL 3031
#B32428
Orient red
RAL 3000
#AF2B1E
Flame red
RAL 3001
#A52019
Signal red
RAL 3002
#A2231D
Carmine red
RAL 3013
#A12312
Tomato red
FAQ about Firebrick
What is the HEX code for Firebrick?
Firebrick (firebrick) has the HEX code #B22222. In RGB it is rgb(178, 34, 34), and in CMYK it is cmyk(0%, 81%, 81%, 30%).
What is the OKLCH value of Firebrick?
Firebrick converts to oklch(0.497 0.180 26.8). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Firebrick accessible for body text?
Used as a background, Firebrick has a contrast ratio of 3.14:1 with black text and 6.68:1 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 Firebrick?
The closest Pantone reference to Firebrick by ΔE2000 perceptual distance is Pantone 186 C (#C8102E). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Firebrick?
The closest RAL Classic reference to Firebrick by ΔE2000 distance is RAL 3016 (Coral red, #B32821). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Firebrick?
The complementary color (180° opposite on the HSL color wheel) of Firebrick is #22B4B4. 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.