#901B1D#901B1D

#901B1D is a dark, vivid red. Relative luminance 0.068; OKLCH L 42.7% C 0.152 H 25.9°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#901B1D
RGB	rgb(144, 27, 29)
HSL	hsl(359, 68%, 34%)
HSV	hsv(359, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 79.9%, 43.5%)
CIE-LAB	lab(31.36, 47.52, 30.35)
CIE-LCH	lch(31.36, 56.39, 32.56°)
OKLab	oklab(42.66% 0.137 0.0665)
OKLCH	oklch(42.66% 0.152 25.9)
XYZ	xyz(12.1168, 6.8038, 1.8374)
Luminance	0.0680 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B1D #1B908E

analogous

#901B57 #901B1D #90531B

triadic

#901B1D #1D901B #1B1D90

tetradic

#901B1D #57901B #1B908E #531B90

square

#901B1D #57901B #1B908E #531B90

split-complementary

#901B1D #1B9053 #1B5790

monochromatic

#290808 #5C1113 #901B1D #C42527 #DD494B

Accessibility & contrast

On white

8.90

#901B1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#901B1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B1D

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B1D	#FFFFFF	#000000	##FFFFFF
##901B1D	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)

#403A1C

Deuteranopia (green-blind)

#5D5318

Tritanopia (blue-blind)

#9F001D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b1d;
/* rgb */ color: rgb(144, 27, 29);
/* oklch */ color: oklch(42.7% 0.152 25.9);

Tailwind

colors: {
  custom: {
    50: '#b96459',
    500: '#901b1d',
    950: '#000000',
  },
}

SCSS

$custom: #901b1d;
$custom-light: #b96459;
$custom-dark: #000000;

JSON

{
  "hex": "#901b1d",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 29
  },
  "hsl": {
    "h": 358.974,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42663,
    "c": 0.15225,
    "h": 25.9
  },
  "luminance": 0.06802
}

Semantic roles & 50–950 ramp

primary

#901B1D

secondary

#48BFBD

accent

#EBE83D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #901B1D

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

Preview Lab → · Contrast checker → · Palette generator →