#31020B#31020B

#31020B is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.3% C 0.076 H 15.0°. Best body text is #FFFFFF at 18.35:1 contrast (WCAG AA passes).

Color values

HEX	#31020B
RGB	rgb(49, 2, 11)
HSL	hsl(349, 92%, 10%)
HSV	hsv(349, 96%, 19%)
CMYK	cmyk(0%, 95.9%, 77.6%, 80.8%)
CIE-LAB	lab(6.51, 24.03, 5.72)
CIE-LCH	lch(6.51, 24.70, 13.40°)
OKLab	oklab(20.28% 0.0733 0.0196)
OKLCH	oklch(20.28% 0.076 15)
XYZ	xyz(1.3489, 0.7208, 0.3846)
Luminance	0.0072 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31020B #023128

analogous

#310222 #31020B #311102

triadic

#31020B #0B3102 #020B31

tetradic

#31020B #223102 #023128 #110231

square

#31020B #223102 #023128 #110231

split-complementary

#31020B #023111 #022231

monochromatic

#1D0107 #1D0107 #31020B #6C0418 #A70725

Accessibility & contrast

On white

18.35

#31020B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#31020B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31020B

18.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31020B	#FFFFFF	#000000	##FFFFFF
##31020B	1.00	18.35	1.14	18.35
#FFFFFF	18.35	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0E0B

Deuteranopia (green-blind)

#1B180A

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #31020b;
/* rgb */ color: rgb(49, 2, 11);
/* oklch */ color: oklch(20.3% 0.076 15.0);

Tailwind

colors: {
  custom: {
    50: '#6d474c',
    500: '#31020b',
    950: '#000000',
  },
}

SCSS

$custom: #31020b;
$custom-light: #6d474c;
$custom-dark: #000000;

JSON

{
  "hex": "#31020b",
  "rgb": {
    "r": 49,
    "g": 2,
    "b": 11
  },
  "hsl": {
    "h": 348.511,
    "s": 92.157,
    "l": 10
  },
  "oklch": {
    "l": 0.20281,
    "c": 0.07586,
    "h": 15
  },
  "luminance": 0.00721
}

Semantic roles & 50–950 ramp

primary

#31020B

secondary

#197564

accent

#FFD629

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #31020B

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

Preview Lab → · Contrast checker → · Palette generator →