#831A1C#831A1C

#831A1C is a dark, vivid red. Relative luminance 0.056; OKLCH L 40.1% C 0.140 H 25.4°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#831A1C
RGB	rgb(131, 26, 28)
HSL	hsl(359, 67%, 31%)
HSV	hsv(359, 80%, 51%)
CMYK	cmyk(0%, 80.2%, 78.6%, 48.6%)
CIE-LAB	lab(28.51, 43.72, 27.10)
CIE-LCH	lch(28.51, 51.43, 31.79°)
OKLab	oklab(40.06% 0.1264 0.0601)
OKLCH	oklch(40.06% 0.14 25.4)
XYZ	xyz(9.9403, 5.6495, 1.6655)
Luminance	0.0565 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831A1C #1A8381

analogous

#831A50 #831A1C #834C1A

triadic

#831A1C #1C831A #1A1C83

tetradic

#831A1C #50831A #1A8381 #4C1A83

square

#831A1C #50831A #1A8381 #4C1A83

split-complementary

#831A1C #1A834C #1A5083

monochromatic

#1D0606 #501011 #831A1C #B62427 #D93F42

Accessibility & contrast

On white

9.86

#831A1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#831A1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831A1C

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831A1C	#FFFFFF	#000000	##FFFFFF
##831A1C	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)

#3B351B

Deuteranopia (green-blind)

#544B18

Tritanopia (blue-blind)

#91001C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831a1c;
/* rgb */ color: rgb(131, 26, 28);
/* oklch */ color: oklch(40.1% 0.140 25.4);

Tailwind

colors: {
  custom: {
    50: '#af6158',
    500: '#831a1c',
    950: '#000000',
  },
}

SCSS

$custom: #831a1c;
$custom-light: #af6158;
$custom-dark: #000000;

JSON

{
  "hex": "#831a1c",
  "rgb": {
    "r": 131,
    "g": 26,
    "b": 28
  },
  "hsl": {
    "h": 358.857,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.40062,
    "c": 0.13998,
    "h": 25.4
  },
  "luminance": 0.05648
}

Semantic roles & 50–950 ramp

primary

#831A1C

secondary

#42B7B4

accent

#EAE73E

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120503

muted

#817A78

Preview Lab

Preview with #831A1C

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

Preview Lab → · Contrast checker → · Palette generator →