#310B10#310B10

#310B10 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.062 H 16.1°. Best body text is #FFFFFF at 17.71:1 contrast (WCAG AA passes).

Color values

HEX	#310B10
RGB	rgb(49, 11, 16)
HSL	hsl(352, 63%, 12%)
HSV	hsv(352, 78%, 19%)
CMYK	cmyk(0%, 77.6%, 67.3%, 80.8%)
CIE-LAB	lab(8.39, 19.71, 6.01)
CIE-LCH	lch(8.39, 20.61, 16.95°)
OKLab	oklab(21.8% 0.0592 0.0171)
OKLCH	oklch(21.8% 0.062 16.1)
XYZ	xyz(1.4800, 0.9299, 0.5917)
Luminance	0.0093 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B10 #0B312C

analogous

#310B23 #310B10 #31190B

triadic

#310B10 #10310B #0B1031

tetradic

#310B10 #23310B #0B312C #190B31

square

#310B10 #23310B #0B312C #190B31

split-complementary

#310B10 #0B3119 #0B2331

monochromatic

#190608 #190608 #310B10 #631620 #952131

Accessibility & contrast

On white

17.71

#310B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B10

17.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B10	#FFFFFF	#000000	##FFFFFF
##310B10	1.00	17.71	1.19	17.71
#FFFFFF	17.71	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141310

Deuteranopia (green-blind)

#1E1B0F

Tritanopia (blue-blind)

#36050D

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b10;
/* rgb */ color: rgb(49, 11, 16);
/* oklch */ color: oklch(21.8% 0.062 16.1);

Tailwind

colors: {
  custom: {
    50: '#6c4c4e',
    500: '#310b10',
    950: '#000000',
  },
}

SCSS

$custom: #310b10;
$custom-light: #6c4c4e;
$custom-dark: #000000;

JSON

{
  "hex": "#310b10",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 16
  },
  "hsl": {
    "h": 352.105,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21795,
    "c": 0.06158,
    "h": 16.1
  },
  "luminance": 0.0093
}

Semantic roles & 50–950 ramp

primary

#310B10

secondary

#2A6E65

accent

#E6D141

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310B10

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

Preview Lab → · Contrast checker → · Palette generator →