#31090A#31090A

#31090A is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.4% C 0.065 H 23.1°. Best body text is #FFFFFF at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#31090A
RGB	rgb(49, 9, 10)
HSL	hsl(359, 69%, 11%)
HSV	hsv(359, 82%, 19%)
CMYK	cmyk(0%, 81.6%, 79.6%, 80.8%)
CIE-LAB	lab(7.86, 20.26, 8.12)
CIE-LCH	lch(7.86, 21.83, 21.83°)
OKLab	oklab(21.35% 0.0596 0.0254)
OKLCH	oklch(21.35% 0.065 23.1)
XYZ	xyz(1.4192, 0.8705, 0.3804)
Luminance	0.0087 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31090A #093130

analogous

#31091E #31090A #311C09

triadic

#31090A #0A3109 #090A31

tetradic

#31090A #1E3109 #093130 #1C0931

square

#31090A #1E3109 #093130 #1C0931

split-complementary

#31090A #09311C #091E31

monochromatic

#1A0505 #1A0505 #31090A #651215 #981C1F

Accessibility & contrast

On white

17.89

#31090A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#31090A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31090A

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31090A	#FFFFFF	#000000	##FFFFFF
##31090A	1.00	17.89	1.17	17.89
#FFFFFF	17.89	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14120A

Deuteranopia (green-blind)

#1E1A09

Tritanopia (blue-blind)

#37020A

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #31090a;
/* rgb */ color: rgb(49, 9, 10);
/* oklch */ color: oklch(21.4% 0.065 23.1);

Tailwind

colors: {
  custom: {
    50: '#6c4b4b',
    500: '#31090a',
    950: '#000000',
  },
}

SCSS

$custom: #31090a;
$custom-light: #6c4b4b;
$custom-dark: #000000;

JSON

{
  "hex": "#31090a",
  "rgb": {
    "r": 49,
    "g": 9,
    "b": 10
  },
  "hsl": {
    "h": 358.5,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21353,
    "c": 0.06476,
    "h": 23.1
  },
  "luminance": 0.0087
}

Semantic roles & 50–950 ramp

primary

#31090A

secondary

#276F6D

accent

#ECE73C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #31090A

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

Preview Lab → · Contrast checker → · Palette generator →