#31100A#31100A

#31100A is a very dark, muted red. Relative luminance 0.010; OKLCH L 22.5% C 0.055 H 32.1°. Best body text is #FFFFFF at 17.37:1 contrast (WCAG AA passes).

Color values

HEX	#31100A
RGB	rgb(49, 16, 10)
HSL	hsl(9, 66%, 12%)
HSV	hsv(9, 80%, 19%)
CMYK	cmyk(0%, 67.3%, 79.6%, 80.8%)
CIE-LAB	lab(9.37, 16.27, 10.29)
CIE-LCH	lch(9.37, 19.25, 32.32°)
OKLab	oklab(22.49% 0.047 0.0295)
OKLCH	oklch(22.49% 0.055 32.1)
XYZ	xyz(1.5068, 1.0457, 0.4096)
Luminance	0.0104 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31100A #0A2B31

analogous

#310A18 #31100A #31240A

triadic

#31100A #0A3110 #100A31

tetradic

#31100A #18310A #0A2B31 #240A31

square

#31100A #18310A #0A2B31 #240A31

split-complementary

#31100A #0A3124 #0A1831

monochromatic

#190805 #190805 #31100A #642114 #97311F

Accessibility & contrast

On white

17.37

#31100A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#31100A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31100A

17.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31100A	#FFFFFF	#000000	##FFFFFF
##31100A	1.00	17.37	1.21	17.37
#FFFFFF	17.37	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#191609

Deuteranopia (green-blind)

#211D09

Tritanopia (blue-blind)

#37090F

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #31100a;
/* rgb */ color: rgb(49, 16, 10);
/* oklch */ color: oklch(22.5% 0.055 32.1);

Tailwind

colors: {
  custom: {
    50: '#6c4f4b',
    500: '#31100a',
    950: '#000000',
  },
}

SCSS

$custom: #31100a;
$custom-light: #6c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#31100a",
  "rgb": {
    "r": 49,
    "g": 16,
    "b": 10
  },
  "hsl": {
    "h": 9.231,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.22485,
    "c": 0.05549,
    "h": 32.1
  },
  "luminance": 0.01045
}

Semantic roles & 50–950 ramp

primary

#31100A

secondary

#29646E

accent

#CFE93F

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070201

muted

#7A7877

Preview Lab

Preview with #31100A

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

Preview Lab → · Contrast checker → · Palette generator →