#901821#901821

#901821 is a dark, vivid red. Relative luminance 0.067; OKLCH L 42.5% C 0.154 H 23.6°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#901821
RGB	rgb(144, 24, 33)
HSL	hsl(356, 71%, 33%)
HSV	hsv(356, 83%, 56%)
CMYK	cmyk(0%, 83.3%, 77.1%, 43.5%)
CIE-LAB	lab(31.10, 48.54, 27.63)
CIE-LCH	lch(31.10, 55.85, 29.65°)
OKLab	oklab(42.49% 0.1411 0.0617)
OKLCH	oklch(42.49% 0.154 23.6)
XYZ	xyz(12.1042, 6.6943, 2.0934)
Luminance	0.0669 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901821 #189087

analogous

#90185D #901821 #904B18

triadic

#901821 #219018 #182190

tetradic

#901821 #5D9018 #189087 #4B1890

square

#901821 #5D9018 #189087 #4B1890

split-complementary

#901821 #18904B #185D90

monochromatic

#270709 #5C0F15 #901821 #C4212D #E0434F

Accessibility & contrast

On white

8.98

#901821 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#901821 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901821

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901821	#FFFFFF	#000000	##FFFFFF
##901821	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3920

Deuteranopia (green-blind)

#5C521C

Tritanopia (blue-blind)

#9F001D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #901821;
/* rgb */ color: rgb(144, 24, 33);
/* oklch */ color: oklch(42.5% 0.154 23.6);

Tailwind

colors: {
  custom: {
    50: '#b9635c',
    500: '#901821',
    950: '#000000',
  },
}

SCSS

$custom: #901821;
$custom-light: #b9635c;
$custom-dark: #000000;

JSON

{
  "hex": "#901821",
  "rgb": {
    "r": 144,
    "g": 24,
    "b": 33
  },
  "hsl": {
    "h": 355.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42489,
    "c": 0.154,
    "h": 23.6
  },
  "luminance": 0.06692
}

Semantic roles & 50–950 ramp

primary

#901821

secondary

#43C0B7

accent

#EEE13A

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #901821

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

Preview Lab → · Contrast checker → · Palette generator →