#310209#310209

#310209 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.2% C 0.076 H 17.5°. Best body text is #FFFFFF at 18.37:1 contrast (WCAG AA passes).

Color values

HEX	#310209
RGB	rgb(49, 2, 9)
HSL	hsl(351, 92%, 10%)
HSV	hsv(351, 96%, 19%)
CMYK	cmyk(0%, 95.9%, 81.6%, 80.8%)
CIE-LAB	lab(6.47, 23.87, 6.49)
CIE-LCH	lch(6.47, 24.73, 15.21°)
OKLab	oklab(20.23% 0.0723 0.0228)
OKLCH	oklch(20.23% 0.076 17.5)
XYZ	xyz(1.3378, 0.7163, 0.3262)
Luminance	0.0072 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310209 #02312A

analogous

#310220 #310209 #311302

triadic

#310209 #093102 #020931

tetradic

#310209 #203102 #02312A #130231

square

#310209 #203102 #02312A #130231

split-complementary

#310209 #023113 #022031

monochromatic

#1D0105 #1D0105 #310209 #6C0414 #A7071F

Accessibility & contrast

On white

18.37

#310209 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#310209 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310209

18.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310209	#FFFFFF	#000000	##FFFFFF
##310209	1.00	18.37	1.14	18.37
#FFFFFF	18.37	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0E09

Deuteranopia (green-blind)

#1B1808

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #310209;
/* rgb */ color: rgb(49, 2, 9);
/* oklch */ color: oklch(20.2% 0.076 17.5);

Tailwind

colors: {
  custom: {
    50: '#6d474b',
    500: '#310209',
    950: '#000000',
  },
}

SCSS

$custom: #310209;
$custom-light: #6d474b;
$custom-dark: #000000;

JSON

{
  "hex": "#310209",
  "rgb": {
    "r": 49,
    "g": 2,
    "b": 9
  },
  "hsl": {
    "h": 351.064,
    "s": 92.157,
    "l": 10
  },
  "oklch": {
    "l": 0.20232,
    "c": 0.0758,
    "h": 17.5
  },
  "luminance": 0.00716
}

Semantic roles & 50–950 ramp

primary

#310209

secondary

#197568

accent

#FFDF29

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #310209

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

Preview Lab → · Contrast checker → · Palette generator →