#901D2B#901D2B

#901D2B is a dark, vivid red. Relative luminance 0.070; OKLCH L 43.0% C 0.149 H 20.2°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#901D2B
RGB	rgb(144, 29, 43)
HSL	hsl(353, 66%, 34%)
HSV	hsv(353, 80%, 56%)
CMYK	cmyk(0%, 79.9%, 70.1%, 43.5%)
CIE-LAB	lab(31.77, 47.53, 22.08)
CIE-LCH	lch(31.77, 52.41, 24.92°)
OKLab	oklab(43.03% 0.1402 0.0516)
OKLCH	oklch(43.03% 0.149 20.2)
XYZ	xyz(12.3784, 6.9844, 2.9814)
Luminance	0.0698 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901D2B #1D9082

analogous

#901D65 #901D2B #90491D

triadic

#901D2B #2B901D #1D2B90

tetradic

#901D2B #65901D #1D9082 #491D90

square

#901D2B #65901D #1D9082 #491D90

split-complementary

#901D2B #1D9049 #1D6590

monochromatic

#2A080D #5D131C #901D2B #C3273A #DB4C5E

Accessibility & contrast

On white

8.76

#901D2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#901D2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901D2B

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901D2B	#FFFFFF	#000000	##FFFFFF
##901D2B	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3B2B

Deuteranopia (green-blind)

#5C5327

Tritanopia (blue-blind)

#9F0023

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #901d2b;
/* rgb */ color: rgb(144, 29, 43);
/* oklch */ color: oklch(43.0% 0.149 20.2);

Tailwind

colors: {
  custom: {
    50: '#b86564',
    500: '#901d2b',
    950: '#000000',
  },
}

SCSS

$custom: #901d2b;
$custom-light: #b86564;
$custom-dark: #000000;

JSON

{
  "hex": "#901d2b",
  "rgb": {
    "r": 144,
    "g": 29,
    "b": 43
  },
  "hsl": {
    "h": 352.696,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.43034,
    "c": 0.14942,
    "h": 20.2
  },
  "luminance": 0.06982
}

Semantic roles & 50–950 ramp

primary

#901D2B

secondary

#4BBDB0

accent

#E9D53E

background

#FCF6F5

surface

#F8EBEA

border

#D1C6C6

text

#130605

muted

#827A79

Preview Lab

Preview with #901D2B

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

Preview Lab → · Contrast checker → · Palette generator →