#90231F#90231F

#90231F is a dark, vivid red. Relative luminance 0.072; OKLCH L 43.4% C 0.145 H 27.3°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#90231F
RGB	rgb(144, 35, 31)
HSL	hsl(2, 65%, 34%)
HSV	hsv(2, 78%, 56%)
CMYK	cmyk(0%, 75.7%, 78.5%, 43.5%)
CIE-LAB	lab(32.33, 44.94, 30.19)
CIE-LCH	lch(32.33, 54.14, 33.90°)
OKLab	oklab(43.39% 0.1293 0.0667)
OKLCH	oklch(43.39% 0.145 27.3)
XYZ	xyz(12.3514, 7.2322, 2.0417)
Luminance	0.0723 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90231F #1F8C90

analogous

#901F54 #90231F #905C1F

triadic

#90231F #1F9023 #231F90

tetradic

#90231F #54901F #1F8C90 #5C1F90

square

#90231F #54901F #1F8C90 #5C1F90

split-complementary

#90231F #1F905C #1F5490

monochromatic

#2B0B09 #5E1714 #90231F #C22F2A #D95550

Accessibility & contrast

On white

8.59

#90231F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#90231F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90231F

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90231F	#FFFFFF	#000000	##FFFFFF
##90231F	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443D1D

Deuteranopia (green-blind)

#5F551B

Tritanopia (blue-blind)

#9F0023

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #90231f;
/* rgb */ color: rgb(144, 35, 31);
/* oklch */ color: oklch(43.4% 0.145 27.3);

Tailwind

colors: {
  custom: {
    50: '#b9675b',
    500: '#90231f',
    950: '#000000',
  },
}

SCSS

$custom: #90231f;
$custom-light: #b9675b;
$custom-dark: #000000;

JSON

{
  "hex": "#90231f",
  "rgb": {
    "r": 144,
    "g": 35,
    "b": 31
  },
  "hsl": {
    "h": 2.124,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.43394,
    "c": 0.14547,
    "h": 27.3
  },
  "luminance": 0.0723
}

Semantic roles & 50–950 ramp

primary

#90231F

secondary

#4EB8BC

accent

#E2E840

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #90231F

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

Preview Lab → · Contrast checker → · Palette generator →