#310D05#310D05

#310D05 is a very dark, moderate red. Relative luminance 0.010; OKLCH L 21.9% C 0.061 H 35.2°. Best body text is #FFFFFF at 17.64:1 contrast (WCAG AA passes).

Color values

HEX	#310D05
RGB	rgb(49, 13, 5)
HSL	hsl(11, 81%, 11%)
HSV	hsv(11, 90%, 19%)
CMYK	cmyk(0%, 73.5%, 89.8%, 80.8%)
CIE-LAB	lab(8.59, 17.70, 11.20)
CIE-LCH	lch(8.59, 20.95, 32.34°)
OKLab	oklab(21.87% 0.05 0.0352)
OKLCH	oklch(21.87% 0.061 35.2)
XYZ	xyz(1.4381, 0.9520, 0.2516)
Luminance	0.0095 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310D05 #052931

analogous

#310513 #310D05 #312305

triadic

#310D05 #05310D #0D0531

tetradic

#310D05 #133105 #052931 #230531

square

#310D05 #133105 #052931 #230531

split-complementary

#310D05 #053123 #051331

monochromatic

#1C0703 #1C0703 #310D05 #691C0B #A02A10

Accessibility & contrast

On white

17.64

#310D05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310D05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310D05

17.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310D05	#FFFFFF	#000000	##FFFFFF
##310D05	1.00	17.64	1.19	17.64
#FFFFFF	17.64	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171404

Deuteranopia (green-blind)

#201C04

Tritanopia (blue-blind)

#37050B

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #310d05;
/* rgb */ color: rgb(49, 13, 5);
/* oklch */ color: oklch(21.9% 0.061 35.2);

Tailwind

colors: {
  custom: {
    50: '#6c4d49',
    500: '#310d05',
    950: '#000000',
  },
}

SCSS

$custom: #310d05;
$custom-light: #6c4d49;
$custom-dark: #000000;

JSON

{
  "hex": "#310d05",
  "rgb": {
    "r": 49,
    "g": 13,
    "b": 5
  },
  "hsl": {
    "h": 10.909,
    "s": 81.481,
    "l": 10.588
  },
  "oklch": {
    "l": 0.21865,
    "c": 0.06114,
    "h": 35.2
  },
  "luminance": 0.00952
}

Semantic roles & 50–950 ramp

primary

#310D05

secondary

#1F6372

accent

#D4F830

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310D05

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

Preview Lab → · Contrast checker → · Palette generator →