#901B37#901B37

#901B37 is a dark, vivid red. Relative luminance 0.070; OKLCH L 43.1% C 0.151 H 13.4°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#901B37
RGB	rgb(144, 27, 55)
HSL	hsl(346, 68%, 34%)
HSV	hsv(346, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 61.8%, 43.5%)
CIE-LAB	lab(31.79, 48.87, 14.28)
CIE-LCH	lch(31.79, 50.91, 16.29°)
OKLab	oklab(43.12% 0.1471 0.0351)
OKLCH	oklch(43.12% 0.151 13.4)
XYZ	xyz(12.5844, 6.9909, 4.3004)
Luminance	0.0699 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B37 #1B9074

analogous

#901B71 #901B37 #90391B

triadic

#901B37 #37901B #1B3790

tetradic

#901B37 #71901B #1B9074 #391B90

square

#901B37 #71901B #1B9074 #391B90

split-complementary

#901B37 #1B9039 #1B7190

monochromatic

#290810 #5C1123 #901B37 #C4254B #DD496C

Accessibility & contrast

On white

8.76

#901B37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#901B37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B37

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B37	#FFFFFF	#000000	##FFFFFF
##901B37	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3B37

Deuteranopia (green-blind)

#5A5334

Tritanopia (blue-blind)

#9E0027

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #901b37;
/* rgb */ color: rgb(144, 27, 55);
/* oklch */ color: oklch(43.1% 0.151 13.4);

Tailwind

colors: {
  custom: {
    50: '#b7646d',
    500: '#901b37',
    950: '#000000',
  },
}

SCSS

$custom: #901b37;
$custom-light: #b7646d;
$custom-dark: #000000;

JSON

{
  "hex": "#901b37",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 55
  },
  "hsl": {
    "h": 345.641,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.43119,
    "c": 0.15122,
    "h": 13.4
  },
  "luminance": 0.06989
}

Semantic roles & 50–950 ramp

primary

#901B37

secondary

#48BFA2

accent

#EBC13D

background

#FCF6F6

surface

#F8EBEB

border

#D1C6C6

text

#130607

muted

#827A7A

Preview Lab

Preview with #901B37

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

Preview Lab → · Contrast checker → · Palette generator →