#B31E2D#B31E2D

#B31E2D is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.7% C 0.182 H 22.7°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#B31E2D
RGB	rgb(179, 30, 45)
HSL	hsl(354, 71%, 41%)
HSV	hsv(354, 83%, 70%)
CMYK	cmyk(0%, 83.2%, 74.9%, 29.8%)
CIE-LAB	lab(39.08, 57.64, 31.25)
CIE-LCH	lch(39.08, 65.57, 28.46°)
OKLab	oklab(49.72% 0.1681 0.0703)
OKLCH	oklch(49.72% 0.182 22.7)
XYZ	xyz(19.5307, 10.7049, 3.5200)
Luminance	0.1070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31E2D #1EB3A4

analogous

#B31E77 #B31E2D #B3591E

triadic

#B31E2D #2DB31E #1E2DB3

tetradic

#B31E2D #77B31E #1EB3A4 #591EB3

square

#B31E2D #77B31E #1EB3A4 #591EB3

split-complementary

#B31E2D #1EB359 #1E77B3

monochromatic

#4A0C13 #7F1520 #B31E2D #DD3243 #E56673

Accessibility & contrast

On white

6.69

#B31E2D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#B31E2D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31E2D

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31E2D	#FFFFFF	#000000	##FFFFFF
##B31E2D	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E482C

Deuteranopia (green-blind)

#736727

Tritanopia (blue-blind)

#C50026

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31e2d;
/* rgb */ color: rgb(179, 30, 45);
/* oklch */ color: oklch(49.7% 0.182 22.7);

Tailwind

colors: {
  custom: {
    50: '#d36b66',
    500: '#b31e2d',
    950: '#000000',
  },
}

SCSS

$custom: #b31e2d;
$custom-light: #d36b66;
$custom-dark: #000000;

JSON

{
  "hex": "#b31e2d",
  "rgb": {
    "r": 179,
    "g": 30,
    "b": 45
  },
  "hsl": {
    "h": 353.96,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.49724,
    "c": 0.1822,
    "h": 22.7
  },
  "luminance": 0.10702
}

Semantic roles & 50–950 ramp

primary

#B31E2D

secondary

#62CBC0

accent

#EEDC3A

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160806

muted

#847A7A

Preview Lab

Preview with #B31E2D

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

Preview Lab → · Contrast checker → · Palette generator →