#310C05#310C05

#310C05 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.062 H 33.9°. Best body text is #FFFFFF at 17.72:1 contrast (WCAG AA passes).

Color values

HEX	#310C05
RGB	rgb(49, 12, 5)
HSL	hsl(10, 81%, 11%)
HSV	hsv(10, 90%, 19%)
CMYK	cmyk(0%, 75.5%, 89.8%, 80.8%)
CIE-LAB	lab(8.37, 18.27, 10.89)
CIE-LCH	lch(8.37, 21.27, 30.80°)
OKLab	oklab(21.7% 0.0518 0.0347)
OKLCH	oklch(21.7% 0.062 33.9)
XYZ	xyz(1.4256, 0.9271, 0.2474)
Luminance	0.0093 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310C05 #052A31

analogous

#310514 #310C05 #312205

triadic

#310C05 #05310C #0C0531

tetradic

#310C05 #143105 #052A31 #220531

square

#310C05 #143105 #052A31 #220531

split-complementary

#310C05 #053122 #051431

monochromatic

#1C0703 #1C0703 #310C05 #691A0B #A02710

Accessibility & contrast

On white

17.72

#310C05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310C05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310C05

17.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310C05	#FFFFFF	#000000	##FFFFFF
##310C05	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)

#161304

Deuteranopia (green-blind)

#201B04

Tritanopia (blue-blind)

#37040A

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310c05;
/* rgb */ color: rgb(49, 12, 5);
/* oklch */ color: oklch(21.7% 0.062 33.9);

Tailwind

colors: {
  custom: {
    50: '#6c4d49',
    500: '#310c05',
    950: '#000000',
  },
}

SCSS

$custom: #310c05;
$custom-light: #6c4d49;
$custom-dark: #000000;

JSON

{
  "hex": "#310c05",
  "rgb": {
    "r": 49,
    "g": 12,
    "b": 5
  },
  "hsl": {
    "h": 9.545,
    "s": 81.481,
    "l": 10.588
  },
  "oklch": {
    "l": 0.21702,
    "c": 0.06233,
    "h": 33.9
  },
  "luminance": 0.00927
}

Semantic roles & 50–950 ramp

primary

#310C05

secondary

#1F6572

accent

#D8F830

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310C05

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

Preview Lab → · Contrast checker → · Palette generator →