#90181E#90181E

#90181E is a dark, vivid red. Relative luminance 0.067; OKLCH L 42.4% C 0.154 H 24.8°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#90181E
RGB	rgb(144, 24, 30)
HSL	hsl(357, 71%, 33%)
HSV	hsv(357, 83%, 56%)
CMYK	cmyk(0%, 83.3%, 79.2%, 43.5%)
CIE-LAB	lab(31.06, 48.42, 29.43)
CIE-LCH	lch(31.06, 56.66, 31.29°)
OKLab	oklab(42.45% 0.14 0.0648)
OKLCH	oklch(42.45% 0.154 24.8)
XYZ	xyz(12.0640, 6.6783, 1.8819)
Luminance	0.0668 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90181E #18908A

analogous

#90185A #90181E #904E18

triadic

#90181E #1E9018 #181E90

tetradic

#90181E #5A9018 #18908A #4E1890

square

#90181E #5A9018 #18908A #4E1890

split-complementary

#90181E #18904E #185A90

monochromatic

#270708 #5C0F13 #90181E #C42129 #E0434B

Accessibility & contrast

On white

8.99

#90181E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#90181E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90181E

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90181E	#FFFFFF	#000000	##FFFFFF
##90181E	1.00	8.99	2.34	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F391D

Deuteranopia (green-blind)

#5C5219

Tritanopia (blue-blind)

#9F001C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #90181e;
/* rgb */ color: rgb(144, 24, 30);
/* oklch */ color: oklch(42.4% 0.154 24.8);

Tailwind

colors: {
  custom: {
    50: '#b9635a',
    500: '#90181e',
    950: '#000000',
  },
}

SCSS

$custom: #90181e;
$custom-light: #b9635a;
$custom-dark: #000000;

JSON

{
  "hex": "#90181e",
  "rgb": {
    "r": 144,
    "g": 24,
    "b": 30
  },
  "hsl": {
    "h": 357,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42449,
    "c": 0.1543,
    "h": 24.8
  },
  "luminance": 0.06676
}

Semantic roles & 50–950 ramp

primary

#90181E

secondary

#43C0BA

accent

#EEE53A

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #90181E

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

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