#901F33#901F33

#901F33 is a dark, vivid red. Relative luminance 0.071; OKLCH L 43.4% C 0.148 H 16.5°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#901F33
RGB	rgb(144, 31, 51)
HSL	hsl(349, 65%, 34%)
HSV	hsv(349, 78%, 56%)
CMYK	cmyk(0%, 78.5%, 64.6%, 43.5%)
CIE-LAB	lab(32.15, 47.35, 17.38)
CIE-LCH	lch(32.15, 50.44, 20.15°)
OKLab	oklab(43.36% 0.1414 0.0419)
OKLCH	oklch(43.36% 0.148 16.5)
XYZ	xyz(12.5905, 7.1502, 3.8485)
Luminance	0.0715 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901F33 #1F907C

analogous

#901F6B #901F33 #90441F

triadic

#901F33 #33901F #1F3390

tetradic

#901F33 #6B901F #1F907C #441F90

square

#901F33 #6B901F #1F907C #441F90

split-complementary

#901F33 #1F9044 #1F6B90

monochromatic

#2B090F #5E1421 #901F33 #C22A45 #D95068

Accessibility & contrast

On white

8.64

#901F33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#901F33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901F33

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901F33	#FFFFFF	#000000	##FFFFFF
##901F33	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3D33

Deuteranopia (green-blind)

#5C5430

Tritanopia (blue-blind)

#9E0028

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #901f33;
/* rgb */ color: rgb(144, 31, 51);
/* oklch */ color: oklch(43.4% 0.148 16.5);

Tailwind

colors: {
  custom: {
    50: '#b7666a',
    500: '#901f33',
    950: '#000000',
  },
}

SCSS

$custom: #901f33;
$custom-light: #b7666a;
$custom-dark: #000000;

JSON

{
  "hex": "#901f33",
  "rgb": {
    "r": 144,
    "g": 31,
    "b": 51
  },
  "hsl": {
    "h": 349.381,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.43359,
    "c": 0.14751,
    "h": 16.5
  },
  "luminance": 0.07148
}

Semantic roles & 50–950 ramp

primary

#901F33

secondary

#4EBCA9

accent

#E8CA40

background

#FCF6F6

surface

#F8EBEB

border

#D1C6C6

text

#130606

muted

#827A7A

Preview Lab

Preview with #901F33

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

Preview Lab → · Contrast checker → · Palette generator →