#90171B#90171B

#90171B is a dark, vivid red. Relative luminance 0.066; OKLCH L 42.3% C 0.155 H 25.7°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#90171B
RGB	rgb(144, 23, 27)
HSL	hsl(358, 72%, 33%)
HSV	hsv(358, 84%, 56%)
CMYK	cmyk(0%, 84%, 81.3%, 43.5%)
CIE-LAB	lab(30.93, 48.59, 31.10)
CIE-LCH	lch(30.93, 57.69, 32.62°)
OKLab	oklab(42.34% 0.1399 0.0675)
OKLCH	oklch(42.34% 0.155 25.7)
XYZ	xyz(12.0073, 6.6232, 1.6829)
Luminance	0.0662 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90171B #17908C

analogous

#901757 #90171B #905017

triadic

#90171B #1B9017 #171B90

tetradic

#90171B #579017 #17908C #501790

square

#90171B #579017 #17908C #501790

split-complementary

#90171B #179050 #175790

monochromatic

#260607 #5B0F11 #90171B #C51F25 #E14146

Accessibility & contrast

On white

9.04

#90171B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#90171B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90171B

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90171B	#FFFFFF	#000000	##FFFFFF
##90171B	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F381A

Deuteranopia (green-blind)

#5C5215

Tritanopia (blue-blind)

#9F001A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #90171b;
/* rgb */ color: rgb(144, 23, 27);
/* oklch */ color: oklch(42.3% 0.155 25.7);

Tailwind

colors: {
  custom: {
    50: '#b96258',
    500: '#90171b',
    950: '#000000',
  },
}

SCSS

$custom: #90171b;
$custom-light: #b96258;
$custom-dark: #000000;

JSON

{
  "hex": "#90171b",
  "rgb": {
    "r": 144,
    "g": 23,
    "b": 27
  },
  "hsl": {
    "h": 358.017,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42342,
    "c": 0.15529,
    "h": 25.7
  },
  "luminance": 0.06621
}

Semantic roles & 50–950 ramp

primary

#90171B

secondary

#42C1BD

accent

#EFE939

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #90171B

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

Preview Lab → · Contrast checker → · Palette generator →