#901F37#901F37

#901F37 is a dark, vivid red. Relative luminance 0.072; OKLCH L 43.4% C 0.148 H 14.3°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#901F37
RGB	rgb(144, 31, 55)
HSL	hsl(347, 65%, 34%)
HSV	hsv(347, 78%, 56%)
CMYK	cmyk(0%, 78.5%, 61.8%, 43.5%)
CIE-LAB	lab(32.23, 47.62, 14.87)
CIE-LCH	lch(32.23, 49.89, 17.34°)
OKLab	oklab(43.45% 0.1431 0.0365)
OKLCH	oklch(43.45% 0.148 14.3)
XYZ	xyz(12.6825, 7.1870, 4.3331)
Luminance	0.0718 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901F37 #1F9078

analogous

#901F70 #901F37 #90401F

triadic

#901F37 #37901F #1F3790

tetradic

#901F37 #70901F #1F9078 #401F90

square

#901F37 #70901F #1F9078 #401F90

split-complementary

#901F37 #1F9040 #1F7090

monochromatic

#2B0911 #5E1424 #901F37 #C22A4A #D9506D

Accessibility & contrast

On white

8.62

#901F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#901F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901F37

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901F37	#FFFFFF	#000000	##FFFFFF
##901F37	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3D37

Deuteranopia (green-blind)

#5B5434

Tritanopia (blue-blind)

#9E0029

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #901f37;
/* rgb */ color: rgb(144, 31, 55);
/* oklch */ color: oklch(43.4% 0.148 14.3);

Tailwind

colors: {
  custom: {
    50: '#b7666d',
    500: '#901f37',
    950: '#000000',
  },
}

SCSS

$custom: #901f37;
$custom-light: #b7666d;
$custom-dark: #000000;

JSON

{
  "hex": "#901f37",
  "rgb": {
    "r": 144,
    "g": 31,
    "b": 55
  },
  "hsl": {
    "h": 347.257,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.43446,
    "c": 0.14765,
    "h": 14.3
  },
  "luminance": 0.07185
}

Semantic roles & 50–950 ramp

primary

#901F37

secondary

#4EBCA5

accent

#E8C440

background

#FCF6F6

surface

#F8EBEB

border

#D1C6C6

text

#130607

muted

#827A7A

Preview Lab

Preview with #901F37

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

Preview Lab → · Contrast checker → · Palette generator →