#831729#831729

#831729 is a dark, vivid red. Relative luminance 0.056; OKLCH L 40.0% C 0.141 H 18.1°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#831729
RGB	rgb(131, 23, 41)
HSL	hsl(350, 70%, 30%)
HSV	hsv(350, 82%, 51%)
CMYK	cmyk(0%, 82.4%, 68.7%, 48.6%)
CIE-LAB	lab(28.38, 45.29, 18.57)
CIE-LCH	lch(28.38, 48.94, 22.30°)
OKLab	oklab(40.03% 0.1345 0.044)
OKLCH	oklch(40.03% 0.141 18.1)
XYZ	xyz(10.0678, 5.5997, 2.6481)
Luminance	0.0560 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#831729 #178371

analogous

#83175F #831729 #833B17

triadic

#831729 #298317 #172983

tetradic

#831729 #5F8317 #178371 #3B1783

square

#831729 #5F8317 #178371 #3B1783

split-complementary

#831729 #17833B #175F83

monochromatic

#1B0508 #4F0E19 #831729 #B72039 #DC3854

Accessibility & contrast

On white

9.91

#831729 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#831729 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #831729

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##831729	#FFFFFF	#000000	##FFFFFF
##831729	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383429

Deuteranopia (green-blind)

#534B26

Tritanopia (blue-blind)

#90001F

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #831729;
/* rgb */ color: rgb(131, 23, 41);
/* oklch */ color: oklch(40.0% 0.141 18.1);

Tailwind

colors: {
  custom: {
    50: '#ae6062',
    500: '#831729',
    950: '#000000',
  },
}

SCSS

$custom: #831729;
$custom-light: #ae6062;
$custom-dark: #000000;

JSON

{
  "hex": "#831729",
  "rgb": {
    "r": 131,
    "g": 23,
    "b": 41
  },
  "hsl": {
    "h": 350,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40029,
    "c": 0.14146,
    "h": 18.1
  },
  "luminance": 0.05598
}

Semantic roles & 50–950 ramp

primary

#831729

secondary

#3FB7A3

accent

#EDCF3B

background

#FBF6F5

surface

#F6EBEA

border

#D0C6C6

text

#120505

muted

#817A79

Preview Lab

Preview with #831729

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

Preview Lab → · Contrast checker → · Palette generator →