#90231C#90231C

#90231C is a dark, vivid red. Relative luminance 0.072; OKLCH L 43.4% C 0.146 H 28.5°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#90231C
RGB	rgb(144, 35, 28)
HSL	hsl(4, 67%, 34%)
HSV	hsv(4, 81%, 56%)
CMYK	cmyk(0%, 75.7%, 80.6%, 43.5%)
CIE-LAB	lab(32.30, 44.83, 31.92)
CIE-LCH	lch(32.30, 55.03, 35.45°)
OKLab	oklab(43.36% 0.1283 0.0696)
OKLCH	oklch(43.36% 0.146 28.5)
XYZ	xyz(12.3137, 7.2171, 1.8431)
Luminance	0.0722 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90231C #1C8990

analogous

#901C4F #90231C #905D1C

triadic

#90231C #1C9023 #231C90

tetradic

#90231C #4F901C #1C8990 #5D1C90

square

#90231C #4F901C #1C8990 #5D1C90

split-complementary

#90231C #1C905D #1C4F90

monochromatic

#2A0A08 #5D1712 #90231C #C32F26 #DC534A

Accessibility & contrast

On white

8.60

#90231C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#90231C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90231C

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90231C	#FFFFFF	#000000	##FFFFFF
##90231C	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443D1A

Deuteranopia (green-blind)

#5F5517

Tritanopia (blue-blind)

#9F0023

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #90231c;
/* rgb */ color: rgb(144, 35, 28);
/* oklch */ color: oklch(43.4% 0.146 28.5);

Tailwind

colors: {
  custom: {
    50: '#b96759',
    500: '#90231c',
    950: '#000000',
  },
}

SCSS

$custom: #90231c;
$custom-light: #b96759;
$custom-dark: #000000;

JSON

{
  "hex": "#90231c",
  "rgb": {
    "r": 144,
    "g": 35,
    "b": 28
  },
  "hsl": {
    "h": 3.621,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43359,
    "c": 0.14592,
    "h": 28.5
  },
  "luminance": 0.07215
}

Semantic roles & 50–950 ramp

primary

#90231C

secondary

#4AB7BE

accent

#E0EA3D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #90231C

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

Preview Lab → · Contrast checker → · Palette generator →