#90231D#90231D

#90231D is a dark, vivid red. Relative luminance 0.072; OKLCH L 43.4% C 0.146 H 28.1°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#90231D
RGB	rgb(144, 35, 29)
HSL	hsl(3, 66%, 34%)
HSV	hsv(3, 80%, 56%)
CMYK	cmyk(0%, 75.7%, 79.9%, 43.5%)
CIE-LAB	lab(32.31, 44.86, 31.35)
CIE-LCH	lch(32.31, 54.73, 34.94°)
OKLab	oklab(43.37% 0.1286 0.0687)
OKLCH	oklch(43.37% 0.146 28.1)
XYZ	xyz(12.3259, 7.2220, 1.9071)
Luminance	0.0722 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90231D #1D8A90

analogous

#901D51 #90231D #905D1D

triadic

#90231D #1D9023 #231D90

tetradic

#90231D #51901D #1D8A90 #5D1D90

square

#90231D #51901D #1D8A90 #5D1D90

split-complementary

#90231D #1D905D #1D5190

monochromatic

#2A0A08 #5D1713 #90231D #C32F27 #DB544C

Accessibility & contrast

On white

8.59

#90231D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#90231D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90231D

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90231D	#FFFFFF	#000000	##FFFFFF
##90231D	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443D1B

Deuteranopia (green-blind)

#5F5518

Tritanopia (blue-blind)

#9F0023

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #90231d;
/* rgb */ color: rgb(144, 35, 29);
/* oklch */ color: oklch(43.4% 0.146 28.1);

Tailwind

colors: {
  custom: {
    50: '#b9675a',
    500: '#90231d',
    950: '#000000',
  },
}

SCSS

$custom: #90231d;
$custom-light: #b9675a;
$custom-dark: #000000;

JSON

{
  "hex": "#90231d",
  "rgb": {
    "r": 144,
    "g": 35,
    "b": 29
  },
  "hsl": {
    "h": 3.13,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4337,
    "c": 0.14577,
    "h": 28.1
  },
  "luminance": 0.0722
}

Semantic roles & 50–950 ramp

primary

#90231D

secondary

#4BB7BD

accent

#E0E93E

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #90231D

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

Preview Lab → · Contrast checker → · Palette generator →