#310C04#310C04

#310C04 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.063 H 35.4°. Best body text is #FFFFFF at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#310C04
RGB	rgb(49, 12, 4)
HSL	hsl(11, 85%, 10%)
HSV	hsv(11, 92%, 19%)
CMYK	cmyk(0%, 75.5%, 91.8%, 80.8%)
CIE-LAB	lab(8.35, 18.20, 11.27)
CIE-LCH	lch(8.35, 21.40, 31.77°)
OKLab	oklab(21.68% 0.0512 0.0364)
OKLCH	oklch(21.68% 0.063 35.4)
XYZ	xyz(1.4202, 0.9249, 0.2186)
Luminance	0.0092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310C04 #042931

analogous

#310412 #310C04 #312204

triadic

#310C04 #04310C #0C0431

tetradic

#310C04 #123104 #042931 #220431

square

#310C04 #123104 #042931 #220431

split-complementary

#310C04 #043122 #041231

monochromatic

#1C0702 #1C0702 #310C04 #6A1A09 #A2280D

Accessibility & contrast

On white

17.72

#310C04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310C04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310C04

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310C04	#FFFFFF	#000000	##FFFFFF
##310C04	1.00	17.72	1.19	17.72
#FFFFFF	17.72	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171303

Deuteranopia (green-blind)

#201B03

Tritanopia (blue-blind)

#37040A

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310c04;
/* rgb */ color: rgb(49, 12, 4);
/* oklch */ color: oklch(21.7% 0.063 35.4);

Tailwind

colors: {
  custom: {
    50: '#6c4d48',
    500: '#310c04',
    950: '#000000',
  },
}

SCSS

$custom: #310c04;
$custom-light: #6c4d48;
$custom-dark: #000000;

JSON

{
  "hex": "#310c04",
  "rgb": {
    "r": 49,
    "g": 12,
    "b": 4
  },
  "hsl": {
    "h": 10.667,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.21681,
    "c": 0.06277,
    "h": 35.4
  },
  "luminance": 0.00925
}

Semantic roles & 50–950 ramp

primary

#310C04

secondary

#1D6473

accent

#D6FB2D

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310C04

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

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