#31090F#31090F

#31090F is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.5% C 0.064 H 15.8°. Best body text is #FFFFFF at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#31090F
RGB	rgb(49, 9, 15)
HSL	hsl(351, 69%, 11%)
HSV	hsv(351, 82%, 19%)
CMYK	cmyk(0%, 81.6%, 69.4%, 80.8%)
CIE-LAB	lab(7.98, 20.68, 5.94)
CIE-LCH	lch(7.98, 21.52, 16.03°)
OKLab	oklab(21.48% 0.062 0.0176)
OKLCH	oklch(21.48% 0.064 15.8)
XYZ	xyz(1.4507, 0.8830, 0.5459)
Luminance	0.0088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31090F #09312B

analogous

#310923 #31090F #311709

triadic

#31090F #0F3109 #090F31

tetradic

#31090F #233109 #09312B #170931

square

#31090F #233109 #09312B #170931

split-complementary

#31090F #093117 #092331

monochromatic

#1A0508 #1A0508 #31090F #65121F #981C2F

Accessibility & contrast

On white

17.85

#31090F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#31090F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31090F

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31090F	#FFFFFF	#000000	##FFFFFF
##31090F	1.00	17.85	1.18	17.85
#FFFFFF	17.85	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13120F

Deuteranopia (green-blind)

#1D1B0E

Tritanopia (blue-blind)

#36030B

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #31090f;
/* rgb */ color: rgb(49, 9, 15);
/* oklch */ color: oklch(21.5% 0.064 15.8);

Tailwind

colors: {
  custom: {
    50: '#6c4b4e',
    500: '#31090f',
    950: '#000000',
  },
}

SCSS

$custom: #31090f;
$custom-light: #6c4b4e;
$custom-dark: #000000;

JSON

{
  "hex": "#31090f",
  "rgb": {
    "r": 49,
    "g": 9,
    "b": 15
  },
  "hsl": {
    "h": 351,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21475,
    "c": 0.06446,
    "h": 15.8
  },
  "luminance": 0.00883
}

Semantic roles & 50–950 ramp

primary

#31090F

secondary

#276F64

accent

#ECD13C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #31090F

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

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