#901B33#901B33

#901B33 is a dark, vivid red. Relative luminance 0.070; OKLCH L 43.0% C 0.151 H 15.6°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#901B33
RGB	rgb(144, 27, 51)
HSL	hsl(348, 68%, 34%)
HSV	hsv(348, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 64.6%, 43.5%)
CIE-LAB	lab(31.70, 48.60, 16.80)
CIE-LCH	lch(31.70, 51.42, 19.06°)
OKLab	oklab(43.03% 0.1455 0.0406)
OKLCH	oklch(43.03% 0.151 15.6)
XYZ	xyz(12.4924, 6.9541, 3.8158)
Luminance	0.0695 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B33 #1B9078

analogous

#901B6D #901B33 #903D1B

triadic

#901B33 #33901B #1B3390

tetradic

#901B33 #6D901B #1B9078 #3D1B90

square

#901B33 #6D901B #1B9078 #3D1B90

split-complementary

#901B33 #1B903D #1B6D90

monochromatic

#29080E #5C1121 #901B33 #C42545 #DD4967

Accessibility & contrast

On white

8.79

#901B33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#901B33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B33

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B33	#FFFFFF	#000000	##FFFFFF
##901B33	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3B33

Deuteranopia (green-blind)

#5B5330

Tritanopia (blue-blind)

#9E0026

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #901b33;
/* rgb */ color: rgb(144, 27, 51);
/* oklch */ color: oklch(43.0% 0.151 15.6);

Tailwind

colors: {
  custom: {
    50: '#b8646a',
    500: '#901b33',
    950: '#000000',
  },
}

SCSS

$custom: #901b33;
$custom-light: #b8646a;
$custom-dark: #000000;

JSON

{
  "hex": "#901b33",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 51
  },
  "hsl": {
    "h": 347.692,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.4303,
    "c": 0.15101,
    "h": 15.6
  },
  "luminance": 0.06952
}

Semantic roles & 50–950 ramp

primary

#901B33

secondary

#48BFA6

accent

#EBC73D

background

#FCF6F6

surface

#F8EBEB

border

#D1C6C6

text

#130606

muted

#827A7A

Preview Lab

Preview with #901B33

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

Preview Lab → · Contrast checker → · Palette generator →