#901B2B#901B2B

#901B2B is a dark, vivid red. Relative luminance 0.069; OKLCH L 42.9% C 0.151 H 19.7°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#901B2B
RGB	rgb(144, 27, 43)
HSL	hsl(352, 68%, 34%)
HSV	hsv(352, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 70.1%, 43.5%)
CIE-LAB	lab(31.55, 48.14, 21.82)
CIE-LCH	lch(31.55, 52.86, 24.38°)
OKLab	oklab(42.87% 0.1422 0.051)
OKLCH	oklch(42.87% 0.151 19.7)
XYZ	xyz(12.3310, 6.8895, 2.9656)
Luminance	0.0689 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B2B #1B9080

analogous

#901B65 #901B2B #90451B

triadic

#901B2B #2B901B #1B2B90

tetradic

#901B2B #65901B #1B9080 #451B90

square

#901B2B #65901B #1B9080 #451B90

split-complementary

#901B2B #1B9045 #1B6590

monochromatic

#29080C #5C111C #901B2B #C4253A #DD495D

Accessibility & contrast

On white

8.83

#901B2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#901B2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B2B

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B2B	#FFFFFF	#000000	##FFFFFF
##901B2B	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)

#3F3A2B

Deuteranopia (green-blind)

#5C5327

Tritanopia (blue-blind)

#9F0022

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b2b;
/* rgb */ color: rgb(144, 27, 43);
/* oklch */ color: oklch(42.9% 0.151 19.7);

Tailwind

colors: {
  custom: {
    50: '#b86464',
    500: '#901b2b',
    950: '#000000',
  },
}

SCSS

$custom: #901b2b;
$custom-light: #b86464;
$custom-dark: #000000;

JSON

{
  "hex": "#901b2b",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 43
  },
  "hsl": {
    "h": 351.795,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42873,
    "c": 0.15105,
    "h": 19.7
  },
  "luminance": 0.06888
}

Semantic roles & 50–950 ramp

primary

#901B2B

secondary

#48BFAE

accent

#EBD33D

background

#FCF6F5

surface

#F8EBEA

border

#D1C6C6

text

#130605

muted

#827A79

Preview Lab

Preview with #901B2B

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

Preview Lab → · Contrast checker → · Palette generator →