#B31E23#B31E23

#B31E23 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.6% C 0.183 H 25.9°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#B31E23
RGB	rgb(179, 30, 35)
HSL	hsl(358, 71%, 41%)
HSV	hsv(358, 83%, 70%)
CMYK	cmyk(0%, 83.2%, 80.4%, 29.8%)
CIE-LAB	lab(38.96, 57.29, 37.00)
CIE-LCH	lch(38.96, 68.19, 32.85°)
OKLab	oklab(49.6% 0.1648 0.0799)
OKLCH	oklch(49.6% 0.183 25.9)
XYZ	xyz(19.3605, 10.6368, 2.6235)
Luminance	0.1063 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31E23 #1EB3AE

analogous

#B31E6D #B31E23 #B3641E

triadic

#B31E23 #23B31E #1E23B3

tetradic

#B31E23 #6DB31E #1EB3AE #641EB3

square

#B31E23 #6DB31E #1EB3AE #641EB3

split-complementary

#B31E23 #1EB364 #1E6DB3

monochromatic

#4A0C0F #7F1519 #B31E23 #DD3237 #E5666A

Accessibility & contrast

On white

6.72

#B31E23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#B31E23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31E23

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31E23	#FFFFFF	#000000	##FFFFFF
##B31E23	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4721

Deuteranopia (green-blind)

#73671C

Tritanopia (blue-blind)

#C60022

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31e23;
/* rgb */ color: rgb(179, 30, 35);
/* oklch */ color: oklch(49.6% 0.183 25.9);

Tailwind

colors: {
  custom: {
    50: '#d46b5f',
    500: '#b31e23',
    950: '#000000',
  },
}

SCSS

$custom: #b31e23;
$custom-light: #d46b5f;
$custom-dark: #000000;

JSON

{
  "hex": "#b31e23",
  "rgb": {
    "r": 179,
    "g": 30,
    "b": 35
  },
  "hsl": {
    "h": 357.987,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.496,
    "c": 0.18312,
    "h": 25.9
  },
  "luminance": 0.10634
}

Semantic roles & 50–950 ramp

primary

#B31E23

secondary

#62CBC7

accent

#EEE83A

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B31E23

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

Preview Lab → · Contrast checker → · Palette generator →