#B4431F#B4431F

#B4431F is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.4% C 0.155 H 37.3°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#B4431F
RGB	rgb(180, 67, 31)
HSL	hsl(14, 71%, 41%)
HSV	hsv(14, 83%, 71%)
CMYK	cmyk(0%, 62.8%, 82.8%, 29.4%)
CIE-LAB	lab(43.97, 44.15, 44.00)
CIE-LCH	lch(43.97, 62.33, 44.90°)
OKLab	oklab(53.37% 0.123 0.0938)
OKLCH	oklch(53.37% 0.155 37.3)
XYZ	xyz(21.0792, 13.8196, 2.8535)
Luminance	0.1382 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4431F #1F90B4

analogous

#B41F45 #B4431F #B48E1F

triadic

#B4431F #1FB443 #431FB4

tetradic

#B4431F #45B41F #1F90B4 #8E1FB4

square

#B4431F #45B41F #1F90B4 #8E1FB4

split-complementary

#B4431F #1FB48E #1F45B4

monochromatic

#4C1C0D #803016 #B4431F #DC5D34 #E58668

Accessibility & contrast

On white

5.58

#B4431F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#B4431F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4431F

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4431F	#FFFFFF	#000000	##FFFFFF
##B4431F	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635819

Deuteranopia (green-blind)

#7F711A

Tritanopia (blue-blind)

#C6253C

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b4431f;
/* rgb */ color: rgb(180, 67, 31);
/* oklch */ color: oklch(53.4% 0.155 37.3);

Tailwind

colors: {
  custom: {
    50: '#d37c5e',
    500: '#b4431f',
    950: '#000000',
  },
}

SCSS

$custom: #b4431f;
$custom-light: #d37c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#b4431f",
  "rgb": {
    "r": 180,
    "g": 67,
    "b": 31
  },
  "hsl": {
    "h": 14.497,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.53373,
    "c": 0.15469,
    "h": 37.3
  },
  "luminance": 0.13817
}

Semantic roles & 50–950 ramp

primary

#B4431F

secondary

#64B2CB

accent

#C2ED3A

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160A04

muted

#847C79

Preview Lab

Preview with #B4431F

Body copy rendered with the generated semantic roles for this colour.

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