#831A1F#831A1F

#831A1F is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.1% C 0.140 H 24.1°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#831A1F
RGB	rgb(131, 26, 31)
HSL	hsl(357, 67%, 31%)
HSV	hsv(357, 80%, 51%)
CMYK	cmyk(0%, 80.2%, 76.3%, 48.6%)
CIE-LAB	lab(28.55, 43.84, 25.26)
CIE-LCH	lch(28.55, 50.60, 29.95°)
OKLab	oklab(40.1% 0.1275 0.0569)
OKLCH	oklch(40.1% 0.14 24.1)
XYZ	xyz(9.9780, 5.6646, 1.8641)
Luminance	0.0566 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831A1F #1A837E

analogous

#831A53 #831A1F #83491A

triadic

#831A1F #1F831A #1A1F83

tetradic

#831A1F #53831A #1A837E #491A83

square

#831A1F #53831A #1A837E #491A83

split-complementary

#831A1F #1A8349 #1A5383

monochromatic

#1D0607 #501013 #831A1F #B6242B #D93F46

Accessibility & contrast

On white

9.85

#831A1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#831A1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831A1F

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831A1F	#FFFFFF	#000000	##FFFFFF
##831A1F	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A351E

Deuteranopia (green-blind)

#544B1B

Tritanopia (blue-blind)

#91001D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831a1f;
/* rgb */ color: rgb(131, 26, 31);
/* oklch */ color: oklch(40.1% 0.140 24.1);

Tailwind

colors: {
  custom: {
    50: '#af615a',
    500: '#831a1f',
    950: '#000000',
  },
}

SCSS

$custom: #831a1f;
$custom-light: #af615a;
$custom-dark: #000000;

JSON

{
  "hex": "#831a1f",
  "rgb": {
    "r": 131,
    "g": 26,
    "b": 31
  },
  "hsl": {
    "h": 357.143,
    "s": 66.879,
    "l": 30.784
  },
  "oklch": {
    "l": 0.40104,
    "c": 0.13964,
    "h": 24.1
  },
  "luminance": 0.05663
}

Semantic roles & 50–950 ramp

primary

#831A1F

secondary

#42B7B1

accent

#EAE23E

background

#FBF6F5

surface

#F6EBE9

border

#D0C6C5

text

#120504

muted

#817A79

Preview Lab

Preview with #831A1F

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

Preview Lab → · Contrast checker → · Palette generator →