#831731#831731

#831731 is a dark, vivid red. Relative luminance 0.057; OKLCH L 40.2% C 0.142 H 13.5°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#831731
RGB	rgb(131, 23, 49)
HSL	hsl(346, 70%, 30%)
HSV	hsv(346, 82%, 51%)
CMYK	cmyk(0%, 82.4%, 62.6%, 48.6%)
CIE-LAB	lab(28.54, 45.79, 13.45)
CIE-LCH	lch(28.54, 47.72, 16.37°)
OKLab	oklab(40.2% 0.1378 0.033)
OKLCH	oklch(40.2% 0.142 13.5)
XYZ	xyz(10.2219, 5.6614, 3.4596)
Luminance	0.0566 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831731 #178369

analogous

#831767 #831731 #833317

triadic

#831731 #318317 #173183

tetradic

#831731 #678317 #178369 #331783

square

#831731 #678317 #178369 #331783

split-complementary

#831731 #178333 #176783

monochromatic

#1B050A #4F0E1E #831731 #B72044 #DC3860

Accessibility & contrast

On white

9.85

#831731 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#831731 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831731

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831731	#FFFFFF	#000000	##FFFFFF
##831731	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)

#363531

Deuteranopia (green-blind)

#524B2E

Tritanopia (blue-blind)

#900022

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831731;
/* rgb */ color: rgb(131, 23, 49);
/* oklch */ color: oklch(40.2% 0.142 13.5);

Tailwind

colors: {
  custom: {
    50: '#ae6068',
    500: '#831731',
    950: '#000000',
  },
}

SCSS

$custom: #831731;
$custom-light: #ae6068;
$custom-dark: #000000;

JSON

{
  "hex": "#831731",
  "rgb": {
    "r": 131,
    "g": 23,
    "b": 49
  },
  "hsl": {
    "h": 345.556,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40201,
    "c": 0.1417,
    "h": 13.5
  },
  "luminance": 0.0566
}

Semantic roles & 50–950 ramp

primary

#831731

secondary

#3FB79A

accent

#EDC23B

background

#FBF6F6

surface

#F6EBEB

border

#D0C6C6

text

#110506

muted

#807A7A

Preview Lab

Preview with #831731

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

Preview Lab → · Contrast checker → · Palette generator →