#31010D#31010D

#31010D is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.2% C 0.078 H 11.5°. Best body text is #FFFFFF at 18.41:1 contrast (WCAG AA passes).

Color values

HEX	#31010D
RGB	rgb(49, 1, 13)
HSL	hsl(345, 96%, 10%)
HSV	hsv(345, 98%, 19%)
CMYK	cmyk(0%, 98%, 73.5%, 80.8%)
CIE-LAB	lab(6.36, 24.73, 4.59)
CIE-LCH	lch(6.36, 25.15, 10.52°)
OKLab	oklab(20.17% 0.0764 0.0156)
OKLCH	oklch(20.17% 0.078 11.5)
XYZ	xyz(1.3503, 0.7039, 0.4455)
Luminance	0.0070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31010D #013125

analogous

#310125 #31010D #310D01

triadic

#31010D #0D3101 #010D31

tetradic

#31010D #253101 #013125 #0D0131

square

#31010D #253101 #013125 #0D0131

split-complementary

#31010D #01310D #012531

monochromatic

#1E0108 #1E0108 #31010D #6D021D #A9032D

Accessibility & contrast

On white

18.41

#31010D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#31010D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31010D

18.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31010D	#FFFFFF	#000000	##FFFFFF
##31010D	1.00	18.41	1.14	18.41
#FFFFFF	18.41	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D0D0D

Deuteranopia (green-blind)

#1A180C

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #31010d;
/* rgb */ color: rgb(49, 1, 13);
/* oklch */ color: oklch(20.2% 0.078 11.5);

Tailwind

colors: {
  custom: {
    50: '#6d474d',
    500: '#31010d',
    950: '#000000',
  },
}

SCSS

$custom: #31010d;
$custom-light: #6d474d;
$custom-dark: #000000;

JSON

{
  "hex": "#31010d",
  "rgb": {
    "r": 49,
    "g": 1,
    "b": 13
  },
  "hsl": {
    "h": 345,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.20168,
    "c": 0.07795,
    "h": 11.5
  },
  "luminance": 0.00704
}

Semantic roles & 50–950 ramp

primary

#31010D

secondary

#17775F

accent

#FFC929

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #31010D

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

Preview Lab → · Contrast checker → · Palette generator →