#901B1B#901B1B

#901B1B is a dark, vivid red. Relative luminance 0.068; OKLCH L 42.6% C 0.152 H 26.6°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#901B1B
RGB	rgb(144, 27, 27)
HSL	hsl(0, 68%, 34%)
HSV	hsv(0, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 81.3%, 43.5%)
CIE-LAB	lab(31.33, 47.45, 31.51)
CIE-LCH	lch(31.33, 56.96, 33.59°)
OKLab	oklab(42.64% 0.1363 0.0683)
OKLCH	oklch(42.64% 0.152 26.6)
XYZ	xyz(12.0928, 6.7942, 1.7114)
Luminance	0.0679 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B1B #1B9090

analogous

#901B55 #901B1B #90551B

triadic

#901B1B #1B901B #1B1B90

tetradic

#901B1B #55901B #1B9090 #551B90

square

#901B1B #55901B #1B9090 #551B90

split-complementary

#901B1B #1B9055 #1B5590

monochromatic

#290808 #5C1111 #901B1B #C42525 #DD4949

Accessibility & contrast

On white

8.90

#901B1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#901B1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B1B

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B1B	#FFFFFF	#000000	##FFFFFF
##901B1B	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#403A19

Deuteranopia (green-blind)

#5D5316

Tritanopia (blue-blind)

#9F001D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b1b;
/* rgb */ color: rgb(144, 27, 27);
/* oklch */ color: oklch(42.6% 0.152 26.6);

Tailwind

colors: {
  custom: {
    50: '#b96458',
    500: '#901b1b',
    950: '#000000',
  },
}

SCSS

$custom: #901b1b;
$custom-light: #b96458;
$custom-dark: #000000;

JSON

{
  "hex": "#901b1b",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 27
  },
  "hsl": {
    "h": 0,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42639,
    "c": 0.15249,
    "h": 26.6
  },
  "luminance": 0.06792
}

Semantic roles & 50–950 ramp

primary

#901B1B

secondary

#48BFBF

accent

#EBEB3D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #901B1B

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

Preview Lab → · Contrast checker → · Palette generator →