#831F17#831F17

#831F17 is a dark, vivid red. Relative luminance 0.059; OKLCH L 40.5% C 0.136 H 29.1°. Best body text is #FFFFFF at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#831F17
RGB	rgb(131, 31, 23)
HSL	hsl(4, 70%, 30%)
HSV	hsv(4, 82%, 51%)
CMYK	cmyk(0%, 76.3%, 82.4%, 48.6%)
CIE-LAB	lab(29.08, 41.78, 30.69)
CIE-LCH	lch(29.08, 51.84, 36.29°)
OKLab	oklab(40.47% 0.1192 0.0664)
OKLCH	oklch(40.47% 0.136 29.1)
XYZ	xyz(10.0059, 5.8687, 1.4164)
Luminance	0.0587 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831F17 #177B83

analogous

#831745 #831F17 #835517

triadic

#831F17 #17831F #1F1783

tetradic

#831F17 #458317 #177B83 #551783

square

#831F17 #458317 #177B83 #551783

split-complementary

#831F17 #178355 #174583

monochromatic

#1B0605 #4F130E #831F17 #B72B20 #DC4438

Accessibility & contrast

On white

9.66

#831F17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#831F17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831F17

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831F17	#FFFFFF	#000000	##FFFFFF
##831F17	1.00	9.66	2.17	9.66
#FFFFFF	9.66	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3715

Deuteranopia (green-blind)

#564C12

Tritanopia (blue-blind)

#91001E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #831f17;
/* rgb */ color: rgb(131, 31, 23);
/* oklch */ color: oklch(40.5% 0.136 29.1);

Tailwind

colors: {
  custom: {
    50: '#af6355',
    500: '#831f17',
    950: '#000000',
  },
}

SCSS

$custom: #831f17;
$custom-light: #af6355;
$custom-dark: #000000;

JSON

{
  "hex": "#831f17",
  "rgb": {
    "r": 131,
    "g": 31,
    "b": 23
  },
  "hsl": {
    "h": 4.444,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40467,
    "c": 0.13644,
    "h": 29.1
  },
  "luminance": 0.05867
}

Semantic roles & 50–950 ramp

primary

#831F17

secondary

#3FAEB7

accent

#E0ED3B

background

#FBF6F5

surface

#F6EBE8

border

#D0C6C4

text

#120603

muted

#817A78

Preview Lab

Preview with #831F17

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

Preview Lab → · Contrast checker → · Palette generator →