#901D1F#901D1F

#901D1F is a dark, vivid red. Relative luminance 0.069; OKLCH L 42.9% C 0.150 H 25.6°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#901D1F
RGB	rgb(144, 29, 31)
HSL	hsl(359, 66%, 34%)
HSV	hsv(359, 80%, 56%)
CMYK	cmyk(0%, 79.9%, 78.5%, 43.5%)
CIE-LAB	lab(31.60, 46.98, 29.40)
CIE-LCH	lch(31.60, 55.42, 32.04°)
OKLab	oklab(42.85% 0.1357 0.065)
OKLCH	oklch(42.85% 0.15 25.6)
XYZ	xyz(12.1897, 6.9089, 1.9878)
Luminance	0.0691 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901D1F #1D908E

analogous

#901D59 #901D1F #90551D

triadic

#901D1F #1F901D #1D1F90

tetradic

#901D1F #59901D #1D908E #551D90

square

#901D1F #59901D #1D908E #551D90

split-complementary

#901D1F #1D9055 #1D5990

monochromatic

#2A0809 #5D1314 #901D1F #C3272A #DB4C4F

Accessibility & contrast

On white

8.82

#901D1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#901D1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901D1F

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901D1F	#FFFFFF	#000000	##FFFFFF
##901D1F	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413A1E

Deuteranopia (green-blind)

#5D531A

Tritanopia (blue-blind)

#9F001F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901d1f;
/* rgb */ color: rgb(144, 29, 31);
/* oklch */ color: oklch(42.9% 0.150 25.6);

Tailwind

colors: {
  custom: {
    50: '#b9645b',
    500: '#901d1f',
    950: '#000000',
  },
}

SCSS

$custom: #901d1f;
$custom-light: #b9645b;
$custom-dark: #000000;

JSON

{
  "hex": "#901d1f",
  "rgb": {
    "r": 144,
    "g": 29,
    "b": 31
  },
  "hsl": {
    "h": 358.957,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4285,
    "c": 0.15048,
    "h": 25.6
  },
  "luminance": 0.06907
}

Semantic roles & 50–950 ramp

primary

#901D1F

secondary

#4BBDBB

accent

#E9E63E

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #901D1F

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

Preview Lab → · Contrast checker → · Palette generator →