#B4331F#B4331F

#B4331F is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.5% C 0.169 H 31.7°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#B4331F
RGB	rgb(180, 51, 31)
HSL	hsl(8, 71%, 41%)
HSV	hsv(8, 83%, 71%)
CMYK	cmyk(0%, 71.7%, 82.8%, 29.4%)
CIE-LAB	lab(41.49, 50.86, 41.68)
CIE-LCH	lch(41.49, 65.76, 39.34°)
OKLab	oklab(51.51% 0.1437 0.0887)
OKLCH	oklch(51.51% 0.169 31.7)
XYZ	xyz(20.2559, 12.1730, 2.5791)
Luminance	0.1217 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4331F #1FA0B4

analogous

#B41F56 #B4331F #B47E1F

triadic

#B4331F #1FB433 #331FB4

tetradic

#B4331F #56B41F #1FA0B4 #7E1FB4

square

#B4331F #56B41F #1FA0B4 #7E1FB4

split-complementary

#B4331F #1FB47E #1F56B4

monochromatic

#4C150D #802416 #B4331F #DC4B34 #E57968

Accessibility & contrast

On white

6.12

#B4331F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B4331F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4331F

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4331F	#FFFFFF	#000000	##FFFFFF
##B4331F	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A501B

Deuteranopia (green-blind)

#7A6C18

Tritanopia (blue-blind)

#C70030

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b4331f;
/* rgb */ color: rgb(180, 51, 31);
/* oklch */ color: oklch(51.5% 0.169 31.7);

Tailwind

colors: {
  custom: {
    50: '#d4735d',
    500: '#b4331f',
    950: '#000000',
  },
}

SCSS

$custom: #b4331f;
$custom-light: #d4735d;
$custom-dark: #000000;

JSON

{
  "hex": "#b4331f",
  "rgb": {
    "r": 180,
    "g": 51,
    "b": 31
  },
  "hsl": {
    "h": 8.054,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.51506,
    "c": 0.16889,
    "h": 31.7
  },
  "luminance": 0.1217
}

Semantic roles & 50–950 ramp

primary

#B4331F

secondary

#64BDCB

accent

#D5ED3A

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4331F

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

Preview Lab → · Contrast checker → · Palette generator →