#901C21#901C21

#901C21 is a dark, vivid red. Relative luminance 0.069; OKLCH L 42.8% C 0.151 H 24.5°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#901C21
RGB	rgb(144, 28, 33)
HSL	hsl(357, 67%, 34%)
HSV	hsv(357, 81%, 56%)
CMYK	cmyk(0%, 80.6%, 77.1%, 43.5%)
CIE-LAB	lab(31.51, 47.37, 28.09)
CIE-LCH	lch(31.51, 55.07, 30.66°)
OKLab	oklab(42.79% 0.1374 0.0627)
OKLCH	oklch(42.79% 0.151 24.5)
XYZ	xyz(12.1928, 6.8715, 2.1229)
Luminance	0.0687 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901C21 #1C908B

analogous

#901C5B #901C21 #90511C

triadic

#901C21 #21901C #1C2190

tetradic

#901C21 #5B901C #1C908B #511C90

square

#901C21 #5B901C #1C908B #511C90

split-complementary

#901C21 #1C9051 #1C5B90

monochromatic

#2A080A #5D1215 #901C21 #C3262D #DC4A51

Accessibility & contrast

On white

8.85

#901C21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#901C21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901C21

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901C21	#FFFFFF	#000000	##FFFFFF
##901C21	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#403A20

Deuteranopia (green-blind)

#5D531C

Tritanopia (blue-blind)

#9F001F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901c21;
/* rgb */ color: rgb(144, 28, 33);
/* oklch */ color: oklch(42.8% 0.151 24.5);

Tailwind

colors: {
  custom: {
    50: '#b9645c',
    500: '#901c21',
    950: '#000000',
  },
}

SCSS

$custom: #901c21;
$custom-light: #b9645c;
$custom-dark: #000000;

JSON

{
  "hex": "#901c21",
  "rgb": {
    "r": 144,
    "g": 28,
    "b": 33
  },
  "hsl": {
    "h": 357.414,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.42794,
    "c": 0.15103,
    "h": 24.5
  },
  "luminance": 0.0687
}

Semantic roles & 50–950 ramp

primary

#901C21

secondary

#4ABEB9

accent

#EAE33D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #901C21

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

Preview Lab → · Contrast checker → · Palette generator →