#310A04#310A04

#310A04 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.4% C 0.065 H 33.0°. Best body text is #FFFFFF at 17.86:1 contrast (WCAG AA passes).

Color values

HEX	#310A04
RGB	rgb(49, 10, 4)
HSL	hsl(8, 85%, 10%)
HSV	hsv(8, 92%, 19%)
CMYK	cmyk(0%, 79.6%, 91.8%, 80.8%)
CIE-LAB	lab(7.94, 19.29, 10.67)
CIE-LCH	lch(7.94, 22.05, 28.95°)
OKLab	oklab(21.37% 0.0546 0.0355)
OKLCH	oklch(21.37% 0.065 33)
XYZ	xyz(1.3972, 0.8790, 0.2109)
Luminance	0.0088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A04 #042B31

analogous

#310414 #310A04 #312004

triadic

#310A04 #04310A #0A0431

tetradic

#310A04 #143104 #042B31 #200431

square

#310A04 #143104 #042B31 #200431

split-complementary

#310A04 #043120 #041431

monochromatic

#1C0602 #1C0602 #310A04 #6A1609 #A2210D

Accessibility & contrast

On white

17.86

#310A04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A04

17.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A04	#FFFFFF	#000000	##FFFFFF
##310A04	1.00	17.86	1.18	17.86
#FFFFFF	17.86	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151203

Deuteranopia (green-blind)

#1F1B03

Tritanopia (blue-blind)

#370209

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #310a04;
/* rgb */ color: rgb(49, 10, 4);
/* oklch */ color: oklch(21.4% 0.065 33.0);

Tailwind

colors: {
  custom: {
    50: '#6c4b48',
    500: '#310a04',
    950: '#000000',
  },
}

SCSS

$custom: #310a04;
$custom-light: #6c4b48;
$custom-dark: #000000;

JSON

{
  "hex": "#310a04",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 4
  },
  "hsl": {
    "h": 8,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.21373,
    "c": 0.06508,
    "h": 33
  },
  "luminance": 0.00879
}

Semantic roles & 50–950 ramp

primary

#310A04

secondary

#1D6873

accent

#E0FB2D

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310A04

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

Preview Lab → · Contrast checker → · Palette generator →