#310B02#310B02

#310B02 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.5% C 0.065 H 37.4°. Best body text is #FFFFFF at 17.81:1 contrast (WCAG AA passes).

Color values

HEX	#310B02
RGB	rgb(49, 11, 2)
HSL	hsl(11, 92%, 10%)
HSV	hsv(11, 96%, 19%)
CMYK	cmyk(0%, 77.6%, 95.9%, 80.8%)
CIE-LAB	lab(8.10, 18.60, 11.72)
CIE-LCH	lch(8.10, 21.99, 32.21°)
OKLab	oklab(21.48% 0.0516 0.0395)
OKLCH	oklch(21.48% 0.065 37.4)
XYZ	xyz(1.3974, 0.8969, 0.1570)
Luminance	0.0090 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B02 #022831

analogous

#310211 #310B02 #312202

triadic

#310B02 #02310B #0B0231

tetradic

#310B02 #113102 #022831 #220231

square

#310B02 #113102 #022831 #220231

split-complementary

#310B02 #023122 #021131

monochromatic

#1D0701 #1D0701 #310B02 #6C1804 #A72507

Accessibility & contrast

On white

17.81

#310B02 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310B02 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B02

17.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B02	#FFFFFF	#000000	##FFFFFF
##310B02	1.00	17.81	1.18	17.81
#FFFFFF	17.81	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161201

Deuteranopia (green-blind)

#1F1B01

Tritanopia (blue-blind)

#370309

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b02;
/* rgb */ color: rgb(49, 11, 2);
/* oklch */ color: oklch(21.5% 0.065 37.4);

Tailwind

colors: {
  custom: {
    50: '#6c4c47',
    500: '#310b02',
    950: '#000000',
  },
}

SCSS

$custom: #310b02;
$custom-light: #6c4c47;
$custom-dark: #000000;

JSON

{
  "hex": "#310b02",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 2
  },
  "hsl": {
    "h": 11.489,
    "s": 92.157,
    "l": 10
  },
  "oklch": {
    "l": 0.21482,
    "c": 0.06493,
    "h": 37.4
  },
  "luminance": 0.00897
}

Semantic roles & 50–950 ramp

primary

#310B02

secondary

#196475

accent

#D6FF29

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310B02

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

Preview Lab → · Contrast checker → · Palette generator →