#B31E2E#B31E2E

#B31E2E is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.7% C 0.182 H 22.3°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#B31E2E
RGB	rgb(179, 30, 46)
HSL	hsl(354, 71%, 41%)
HSV	hsv(354, 83%, 70%)
CMYK	cmyk(0%, 83.2%, 74.3%, 29.8%)
CIE-LAB	lab(39.09, 57.68, 30.66)
CIE-LCH	lch(39.09, 65.32, 27.99°)
OKLab	oklab(49.74% 0.1685 0.0692)
OKLCH	oklch(49.74% 0.182 22.3)
XYZ	xyz(19.5502, 10.7127, 3.6226)
Luminance	0.1071 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31E2E #1EB3A3

analogous

#B31E78 #B31E2E #B3581E

triadic

#B31E2E #2EB31E #1E2EB3

tetradic

#B31E2E #78B31E #1EB3A3 #581EB3

square

#B31E2E #78B31E #1EB3A3 #581EB3

split-complementary

#B31E2E #1EB358 #1E78B3

monochromatic

#4A0C13 #7F1521 #B31E2E #DD3244 #E56674

Accessibility & contrast

On white

6.68

#B31E2E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#B31E2E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31E2E

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31E2E	#FFFFFF	#000000	##FFFFFF
##B31E2E	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E482D

Deuteranopia (green-blind)

#736729

Tritanopia (blue-blind)

#C50026

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31e2e;
/* rgb */ color: rgb(179, 30, 46);
/* oklch */ color: oklch(49.7% 0.182 22.3);

Tailwind

colors: {
  custom: {
    50: '#d36b67',
    500: '#b31e2e',
    950: '#000000',
  },
}

SCSS

$custom: #b31e2e;
$custom-light: #d36b67;
$custom-dark: #000000;

JSON

{
  "hex": "#b31e2e",
  "rgb": {
    "r": 179,
    "g": 30,
    "b": 46
  },
  "hsl": {
    "h": 353.557,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.49738,
    "c": 0.18212,
    "h": 22.3
  },
  "luminance": 0.1071
}

Semantic roles & 50–950 ramp

primary

#B31E2E

secondary

#62CBBF

accent

#EEDB3A

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160806

muted

#847A7A

Preview Lab

Preview with #B31E2E

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

Preview Lab → · Contrast checker → · Palette generator →