#310C0B#310C0B

#310C0B is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.061 H 25.0°. Best body text is #FFFFFF at 17.68:1 contrast (WCAG AA passes).

Color values

HEX	#310C0B
RGB	rgb(49, 12, 11)
HSL	hsl(2, 63%, 12%)
HSV	hsv(2, 78%, 19%)
CMYK	cmyk(0%, 75.5%, 77.6%, 80.8%)
CIE-LAB	lab(8.48, 18.72, 8.60)
CIE-LCH	lch(8.48, 20.60, 24.68°)
OKLab	oklab(21.83% 0.0549 0.0256)
OKLCH	oklch(21.83% 0.061 25)
XYZ	xyz(1.4586, 0.9403, 0.4212)
Luminance	0.0094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310C0B #0B3031

analogous

#310B1D #310C0B #311F0B

triadic

#310C0B #0B310C #0C0B31

tetradic

#310C0B #1D310B #0B3031 #1F0B31

square

#310C0B #1D310B #0B3031 #1F0B31

split-complementary

#310C0B #0B311F #0B1D31

monochromatic

#190606 #190606 #310C0B #631816 #952421

Accessibility & contrast

On white

17.68

#310C0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310C0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310C0B

17.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310C0B	#FFFFFF	#000000	##FFFFFF
##310C0B	1.00	17.68	1.19	17.68
#FFFFFF	17.68	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16130B

Deuteranopia (green-blind)

#1F1B0A

Tritanopia (blue-blind)

#37050C

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310c0b;
/* rgb */ color: rgb(49, 12, 11);
/* oklch */ color: oklch(21.8% 0.061 25.0);

Tailwind

colors: {
  custom: {
    50: '#6c4d4b',
    500: '#310c0b',
    950: '#000000',
  },
}

SCSS

$custom: #310c0b;
$custom-light: #6c4d4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310c0b",
  "rgb": {
    "r": 49,
    "g": 12,
    "b": 11
  },
  "hsl": {
    "h": 1.579,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21826,
    "c": 0.0606,
    "h": 25
  },
  "luminance": 0.0094
}

Semantic roles & 50–950 ramp

primary

#310C0B

secondary

#2A6C6E

accent

#E2E641

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310C0B

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

Preview Lab → · Contrast checker → · Palette generator →