#90171D#90171D

#90171D is a dark, vivid red. Relative luminance 0.066; OKLCH L 42.4% C 0.155 H 25.0°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#90171D
RGB	rgb(144, 23, 29)
HSL	hsl(357, 72%, 33%)
HSV	hsv(357, 84%, 56%)
CMYK	cmyk(0%, 84%, 79.9%, 43.5%)
CIE-LAB	lab(30.96, 48.65, 29.93)
CIE-LCH	lch(30.96, 57.12, 31.59°)
OKLab	oklab(42.37% 0.1406 0.0656)
OKLCH	oklch(42.37% 0.155 25)
XYZ	xyz(12.0312, 6.6328, 1.8089)
Luminance	0.0663 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90171D #17908A

analogous

#901759 #90171D #904E17

triadic

#90171D #1D9017 #171D90

tetradic

#90171D #599017 #17908A #4E1790

square

#90171D #599017 #17908A #4E1790

split-complementary

#90171D #17904E #175990

monochromatic

#260608 #5B0F12 #90171D #C51F28 #E14149

Accessibility & contrast

On white

9.03

#90171D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#90171D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90171D

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90171D	#FFFFFF	#000000	##FFFFFF
##90171D	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F381C

Deuteranopia (green-blind)

#5C5218

Tritanopia (blue-blind)

#9F001B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #90171d;
/* rgb */ color: rgb(144, 23, 29);
/* oklch */ color: oklch(42.4% 0.155 25.0);

Tailwind

colors: {
  custom: {
    50: '#b96259',
    500: '#90171d',
    950: '#000000',
  },
}

SCSS

$custom: #90171d;
$custom-light: #b96259;
$custom-dark: #000000;

JSON

{
  "hex": "#90171d",
  "rgb": {
    "r": 144,
    "g": 23,
    "b": 29
  },
  "hsl": {
    "h": 357.025,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.42366,
    "c": 0.15508,
    "h": 25
  },
  "luminance": 0.06631
}

Semantic roles & 50–950 ramp

primary

#90171D

secondary

#42C1BB

accent

#EFE639

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #90171D

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

Preview Lab → · Contrast checker → · Palette generator →