#901D21#901D21

#901D21 is a dark, vivid red. Relative luminance 0.069; OKLCH L 42.9% C 0.150 H 24.8°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#901D21
RGB	rgb(144, 29, 33)
HSL	hsl(358, 66%, 34%)
HSV	hsv(358, 80%, 56%)
CMYK	cmyk(0%, 79.9%, 77.1%, 43.5%)
CIE-LAB	lab(31.62, 47.06, 28.21)
CIE-LCH	lch(31.62, 54.87, 30.94°)
OKLab	oklab(42.88% 0.1364 0.063)
OKLCH	oklch(42.88% 0.15 24.8)
XYZ	xyz(12.2169, 6.9198, 2.1309)
Luminance	0.0692 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901D21 #1D908C

analogous

#901D5B #901D21 #90531D

triadic

#901D21 #21901D #1D2190

tetradic

#901D21 #5B901D #1D908C #531D90

square

#901D21 #5B901D #1D908C #531D90

split-complementary

#901D21 #1D9053 #1D5B90

monochromatic

#2A080A #5D1315 #901D21 #C3272D #DB4C51

Accessibility & contrast

On white

8.81

#901D21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#901D21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901D21

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901D21	#FFFFFF	#000000	##FFFFFF
##901D21	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413B20

Deuteranopia (green-blind)

#5D531D

Tritanopia (blue-blind)

#9F0020

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901d21;
/* rgb */ color: rgb(144, 29, 33);
/* oklch */ color: oklch(42.9% 0.150 24.8);

Tailwind

colors: {
  custom: {
    50: '#b9645c',
    500: '#901d21',
    950: '#000000',
  },
}

SCSS

$custom: #901d21;
$custom-light: #b9645c;
$custom-dark: #000000;

JSON

{
  "hex": "#901d21",
  "rgb": {
    "r": 144,
    "g": 29,
    "b": 33
  },
  "hsl": {
    "h": 357.913,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.42877,
    "c": 0.15025,
    "h": 24.8
  },
  "luminance": 0.06918
}

Semantic roles & 50–950 ramp

primary

#901D21

secondary

#4BBDB9

accent

#E9E33E

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #901D21

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

Preview Lab → · Contrast checker → · Palette generator →