#31050B#31050B

#31050B is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.8% C 0.071 H 17.8°. Best body text is #FFFFFF at 18.15:1 contrast (WCAG AA passes).

Color values

HEX	#31050B
RGB	rgb(49, 5, 11)
HSL	hsl(352, 81%, 11%)
HSV	hsv(352, 90%, 19%)
CMYK	cmyk(0%, 89.8%, 77.6%, 80.8%)
CIE-LAB	lab(7.10, 22.46, 6.58)
CIE-LCH	lch(7.10, 23.40, 16.34°)
OKLab	oklab(20.77% 0.0673 0.0216)
OKLCH	oklch(20.77% 0.071 17.8)
XYZ	xyz(1.3814, 0.7859, 0.3955)
Luminance	0.0079 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31050B #05312B

analogous

#310521 #31050B #311505

triadic

#31050B #0B3105 #050B31

tetradic

#31050B #213105 #05312B #150531

square

#31050B #213105 #05312B #150531

split-complementary

#31050B #053115 #052131

monochromatic

#1C0306 #1C0306 #31050B #690B17 #A01024

Accessibility & contrast

On white

18.15

#31050B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#31050B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31050B

18.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31050B	#FFFFFF	#000000	##FFFFFF
##31050B	1.00	18.15	1.16	18.15
#FFFFFF	18.15	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11100B

Deuteranopia (green-blind)

#1C190A

Tritanopia (blue-blind)

#370007

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #31050b;
/* rgb */ color: rgb(49, 5, 11);
/* oklch */ color: oklch(20.8% 0.071 17.8);

Tailwind

colors: {
  custom: {
    50: '#6d494b',
    500: '#31050b',
    950: '#000000',
  },
}

SCSS

$custom: #31050b;
$custom-light: #6d494b;
$custom-dark: #000000;

JSON

{
  "hex": "#31050b",
  "rgb": {
    "r": 49,
    "g": 5,
    "b": 11
  },
  "hsl": {
    "h": 351.818,
    "s": 81.481,
    "l": 10.588
  },
  "oklch": {
    "l": 0.20765,
    "c": 0.07066,
    "h": 17.8
  },
  "luminance": 0.00786
}

Semantic roles & 50–950 ramp

primary

#31050B

secondary

#1F7267

accent

#F8DD30

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #31050B

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

Preview Lab → · Contrast checker → · Palette generator →