#831A1D#831A1D

#831A1D is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.1% C 0.140 H 25.0°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#831A1D
RGB	rgb(131, 26, 29)
HSL	hsl(358, 67%, 31%)
HSV	hsv(358, 80%, 51%)
CMYK	cmyk(0%, 80.2%, 77.9%, 48.6%)
CIE-LAB	lab(28.52, 43.76, 26.49)
CIE-LCH	lch(28.52, 51.15, 31.19°)
OKLab	oklab(40.08% 0.1268 0.0591)
OKLCH	oklch(40.08% 0.14 25)
XYZ	xyz(9.9524, 5.6544, 1.7295)
Luminance	0.0565 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831A1D #1A8380

analogous

#831A51 #831A1D #834B1A

triadic

#831A1D #1D831A #1A1D83

tetradic

#831A1D #51831A #1A8380 #4B1A83

square

#831A1D #51831A #1A8380 #4B1A83

split-complementary

#831A1D #1A834B #1A5183

monochromatic

#1D0606 #501012 #831A1D #B62428 #D93F43

Accessibility & contrast

On white

9.86

#831A1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#831A1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831A1D

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831A1D	#FFFFFF	#000000	##FFFFFF
##831A1D	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A351C

Deuteranopia (green-blind)

#544B19

Tritanopia (blue-blind)

#91001D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831a1d;
/* rgb */ color: rgb(131, 26, 29);
/* oklch */ color: oklch(40.1% 0.140 25.0);

Tailwind

colors: {
  custom: {
    50: '#af6159',
    500: '#831a1d',
    950: '#000000',
  },
}

SCSS

$custom: #831a1d;
$custom-light: #af6159;
$custom-dark: #000000;

JSON

{
  "hex": "#831a1d",
  "rgb": {
    "r": 131,
    "g": 26,
    "b": 29
  },
  "hsl": {
    "h": 358.286,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.40075,
    "c": 0.13986,
    "h": 25
  },
  "luminance": 0.05653
}

Semantic roles & 50–950 ramp

primary

#831A1D

secondary

#42B7B3

accent

#EAE53E

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120503

muted

#817A78

Preview Lab

Preview with #831A1D

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

Preview Lab → · Contrast checker → · Palette generator →