#901B1E#901B1E

#901B1E is a dark, vivid red. Relative luminance 0.068; OKLCH L 42.7% C 0.152 H 25.5°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#901B1E
RGB	rgb(144, 27, 30)
HSL	hsl(358, 68%, 34%)
HSV	hsv(358, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 79.2%, 43.5%)
CIE-LAB	lab(31.37, 47.56, 29.76)
CIE-LCH	lch(31.37, 56.10, 32.04°)
OKLab	oklab(42.68% 0.1373 0.0655)
OKLCH	oklch(42.68% 0.152 25.5)
XYZ	xyz(12.1293, 6.8088, 1.9036)
Luminance	0.0681 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B1E #1B908D

analogous

#901B58 #901B1E #90521B

triadic

#901B1E #1E901B #1B1E90

tetradic

#901B1E #58901B #1B908D #521B90

square

#901B1E #58901B #1B908D #521B90

split-complementary

#901B1E #1B9052 #1B5890

monochromatic

#290809 #5C1113 #901B1E #C42529 #DD494C

Accessibility & contrast

On white

8.89

#901B1E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#901B1E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B1E

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B1E	#FFFFFF	#000000	##FFFFFF
##901B1E	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#403A1D

Deuteranopia (green-blind)

#5D5319

Tritanopia (blue-blind)

#9F001E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b1e;
/* rgb */ color: rgb(144, 27, 30);
/* oklch */ color: oklch(42.7% 0.152 25.5);

Tailwind

colors: {
  custom: {
    50: '#b9645a',
    500: '#901b1e',
    950: '#000000',
  },
}

SCSS

$custom: #901b1e;
$custom-light: #b9645a;
$custom-dark: #000000;

JSON

{
  "hex": "#901b1e",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 30
  },
  "hsl": {
    "h": 358.462,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42675,
    "c": 0.15213,
    "h": 25.5
  },
  "luminance": 0.06807
}

Semantic roles & 50–950 ramp

primary

#901B1E

secondary

#48BFBC

accent

#EBE73D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #901B1E

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

Preview Lab → · Contrast checker → · Palette generator →