#901B31#901B31

#901B31 is a dark, vivid red. Relative luminance 0.069; OKLCH L 43.0% C 0.151 H 16.7°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#901B31
RGB	rgb(144, 27, 49)
HSL	hsl(349, 68%, 34%)
HSV	hsv(349, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 66%, 43.5%)
CIE-LAB	lab(31.66, 48.48, 18.05)
CIE-LCH	lch(31.66, 51.73, 20.42°)
OKLab	oklab(42.99% 0.1446 0.0433)
OKLCH	oklch(42.99% 0.151 16.7)
XYZ	xyz(12.4493, 6.9368, 3.5886)
Luminance	0.0693 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B31 #1B907A

analogous

#901B6B #901B31 #903F1B

triadic

#901B31 #31901B #1B3190

tetradic

#901B31 #6B901B #1B907A #3F1B90

square

#901B31 #6B901B #1B907A #3F1B90

split-complementary

#901B31 #1B903F #1B6B90

monochromatic

#29080E #5C111F #901B31 #C42543 #DD4964

Accessibility & contrast

On white

8.80

#901B31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#901B31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B31

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B31	#FFFFFF	#000000	##FFFFFF
##901B31	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3B31

Deuteranopia (green-blind)

#5B532E

Tritanopia (blue-blind)

#9E0025

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b31;
/* rgb */ color: rgb(144, 27, 49);
/* oklch */ color: oklch(43.0% 0.151 16.7);

Tailwind

colors: {
  custom: {
    50: '#b86468',
    500: '#901b31',
    950: '#000000',
  },
}

SCSS

$custom: #901b31;
$custom-light: #b86468;
$custom-dark: #000000;

JSON

{
  "hex": "#901b31",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 49
  },
  "hsl": {
    "h": 348.718,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42988,
    "c": 0.15097,
    "h": 16.7
  },
  "luminance": 0.06935
}

Semantic roles & 50–950 ramp

primary

#901B31

secondary

#48BFA8

accent

#EBCA3D

background

#FCF6F6

surface

#F8EBEB

border

#D1C6C6

text

#130606

muted

#827A7A

Preview Lab

Preview with #901B31

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

Preview Lab → · Contrast checker → · Palette generator →