#310D0D#310D0D

#310D0D is a very dark, muted red. Relative luminance 0.010; OKLCH L 22.0% C 0.059 H 23.2°. Best body text is #FFFFFF at 17.59:1 contrast (WCAG AA passes).

Color values

HEX	#310D0D
RGB	rgb(49, 13, 13)
HSL	hsl(0, 58%, 12%)
HSV	hsv(0, 73%, 19%)
CMYK	cmyk(0%, 73.5%, 73.5%, 80.8%)
CIE-LAB	lab(8.74, 18.31, 8.06)
CIE-LCH	lch(8.74, 20.01, 23.76°)
OKLab	oklab(22.03% 0.0541 0.0232)
OKLCH	oklch(22.03% 0.059 23.2)
XYZ	xyz(1.4833, 0.9701, 0.4898)
Luminance	0.0097 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310D0D #0D3131

analogous

#310D1F #310D0D #311F0D

triadic

#310D0D #0D310D #0D0D31

tetradic

#310D0D #1F310D #0D3131 #1F0D31

square

#310D0D #1F310D #0D3131 #1F0D31

split-complementary

#310D0D #0D311F #0D1F31

monochromatic

#180606 #180606 #310D0D #611A1A #922727

Accessibility & contrast

On white

17.59

#310D0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310D0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310D0D

17.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310D0D	#FFFFFF	#000000	##FFFFFF
##310D0D	1.00	17.59	1.19	17.59
#FFFFFF	17.59	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16140D

Deuteranopia (green-blind)

#1F1C0C

Tritanopia (blue-blind)

#36060D

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #310d0d;
/* rgb */ color: rgb(49, 13, 13);
/* oklch */ color: oklch(22.0% 0.059 23.2);

Tailwind

colors: {
  custom: {
    50: '#6c4d4c',
    500: '#310d0d',
    950: '#000000',
  },
}

SCSS

$custom: #310d0d;
$custom-light: #6c4d4c;
$custom-dark: #000000;

JSON

{
  "hex": "#310d0d",
  "rgb": {
    "r": 49,
    "g": 13,
    "b": 13
  },
  "hsl": {
    "h": 0,
    "s": 58.065,
    "l": 12.157
  },
  "oklch": {
    "l": 0.22031,
    "c": 0.05886,
    "h": 23.2
  },
  "luminance": 0.0097
}

Semantic roles & 50–950 ramp

primary

#310D0D

secondary

#2E6C6C

accent

#E1E147

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310D0D

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

Preview Lab → · Contrast checker → · Palette generator →