#31090D#31090D

#31090D is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.4% C 0.064 H 18.8°. Best body text is #FFFFFF at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#31090D
RGB	rgb(49, 9, 13)
HSL	hsl(354, 69%, 11%)
HSV	hsv(354, 82%, 19%)
CMYK	cmyk(0%, 81.6%, 73.5%, 80.8%)
CIE-LAB	lab(7.93, 20.50, 6.88)
CIE-LCH	lch(7.93, 21.63, 18.55°)
OKLab	oklab(21.42% 0.061 0.0208)
OKLCH	oklch(21.42% 0.064 18.8)
XYZ	xyz(1.4371, 0.8776, 0.4744)
Luminance	0.0088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31090D #09312D

analogous

#310921 #31090D #311909

triadic

#31090D #0D3109 #090D31

tetradic

#31090D #213109 #09312D #190931

square

#31090D #213109 #09312D #190931

split-complementary

#31090D #093119 #092131

monochromatic

#1A0507 #1A0507 #31090D #65121B #981C28

Accessibility & contrast

On white

17.87

#31090D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#31090D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31090D

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31090D	#FFFFFF	#000000	##FFFFFF
##31090D	1.00	17.87	1.18	17.87
#FFFFFF	17.87	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13120D

Deuteranopia (green-blind)

#1E1A0C

Tritanopia (blue-blind)

#37020B

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #31090d;
/* rgb */ color: rgb(49, 9, 13);
/* oklch */ color: oklch(21.4% 0.064 18.8);

Tailwind

colors: {
  custom: {
    50: '#6c4b4c',
    500: '#31090d',
    950: '#000000',
  },
}

SCSS

$custom: #31090d;
$custom-light: #6c4b4c;
$custom-dark: #000000;

JSON

{
  "hex": "#31090d",
  "rgb": {
    "r": 49,
    "g": 9,
    "b": 13
  },
  "hsl": {
    "h": 354,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21423,
    "c": 0.06448,
    "h": 18.8
  },
  "luminance": 0.00877
}

Semantic roles & 50–950 ramp

primary

#31090D

secondary

#276F68

accent

#ECDA3C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #31090D

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

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