#90311D#90311D

#90311D is a dark, vivid red. Relative luminance 0.082; OKLCH L 45.0% C 0.133 H 33.6°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#90311D
RGB	rgb(144, 49, 29)
HSL	hsl(10, 66%, 34%)
HSV	hsv(10, 80%, 56%)
CMYK	cmyk(0%, 66%, 79.9%, 43.5%)
CIE-LAB	lab(34.43, 39.07, 33.54)
CIE-LCH	lch(34.43, 51.50, 40.65°)
OKLab	oklab(44.96% 0.1105 0.0734)
OKLCH	oklch(44.96% 0.133 33.6)
XYZ	xyz(12.8231, 8.2165, 2.0729)
Luminance	0.0822 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#90311D #1D7C90

analogous

#901D43 #90311D #906B1D

triadic

#90311D #1D9031 #311D90

tetradic

#90311D #43901D #1D7C90 #6B1D90

square

#90311D #43901D #1D7C90 #6B1D90

split-complementary

#90311D #1D906B #1D4390

monochromatic

#2A0E08 #5D2013 #90311D #C34227 #DB654C

Accessibility & contrast

On white

7.95

#90311D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#90311D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #90311D

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##90311D	#FFFFFF	#000000	##FFFFFF
##90311D	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C441A

Deuteranopia (green-blind)

#635919

Tritanopia (blue-blind)

#9F172D

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #90311d;
/* rgb */ color: rgb(144, 49, 29);
/* oklch */ color: oklch(45.0% 0.133 33.6);

Tailwind

colors: {
  custom: {
    50: '#b86e5a',
    500: '#90311d',
    950: '#000000',
  },
}

SCSS

$custom: #90311d;
$custom-light: #b86e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#90311d",
  "rgb": {
    "r": 144,
    "g": 49,
    "b": 29
  },
  "hsl": {
    "h": 10.435,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.44961,
    "c": 0.13269,
    "h": 33.6
  },
  "luminance": 0.08215
}

Semantic roles & 50–950 ramp

primary

#90311D

secondary

#4BAABD

accent

#CCE93E

background

#FCF6F5

surface

#F8ECE9

border

#D1C7C5

text

#130704

muted

#827A79

Preview Lab

Preview with #90311D

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

Preview Lab → · Contrast checker → · Palette generator →