#901D1B#901D1B

#901D1B is a dark, vivid red. Relative luminance 0.069; OKLCH L 42.8% C 0.151 H 27.1°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#901D1B
RGB	rgb(144, 29, 27)
HSL	hsl(1, 68%, 34%)
HSV	hsv(1, 81%, 56%)
CMYK	cmyk(0%, 79.9%, 81.3%, 43.5%)
CIE-LAB	lab(31.55, 46.84, 31.74)
CIE-LCH	lch(31.55, 56.58, 34.12°)
OKLab	oklab(42.8% 0.1344 0.0688)
OKLCH	oklch(42.8% 0.151 27.1)
XYZ	xyz(12.1403, 6.8891, 1.7272)
Luminance	0.0689 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901D1B #1B8E90

analogous

#901B53 #901D1B #90571B

triadic

#901D1B #1B901D #1D1B90

tetradic

#901D1B #53901B #1B8E90 #571B90

square

#901D1B #53901B #1B8E90 #571B90

split-complementary

#901D1B #1B9057 #1B5390

monochromatic

#290808 #5C1311 #901D1B #C42725 #DD4B49

Accessibility & contrast

On white

8.83

#901D1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#901D1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901D1B

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901D1B	#FFFFFF	#000000	##FFFFFF
##901D1B	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413A19

Deuteranopia (green-blind)

#5D5316

Tritanopia (blue-blind)

#9F001E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901d1b;
/* rgb */ color: rgb(144, 29, 27);
/* oklch */ color: oklch(42.8% 0.151 27.1);

Tailwind

colors: {
  custom: {
    50: '#b96458',
    500: '#901d1b',
    950: '#000000',
  },
}

SCSS

$custom: #901d1b;
$custom-light: #b96458;
$custom-dark: #000000;

JSON

{
  "hex": "#901d1b",
  "rgb": {
    "r": 144,
    "g": 29,
    "b": 27
  },
  "hsl": {
    "h": 1.026,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42802,
    "c": 0.15097,
    "h": 27.1
  },
  "luminance": 0.06887
}

Semantic roles & 50–950 ramp

primary

#901D1B

secondary

#48BDBF

accent

#E8EB3D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #901D1B

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

Preview Lab → · Contrast checker → · Palette generator →