#901B1C#901B1C

#901B1C is a dark, vivid red. Relative luminance 0.068; OKLCH L 42.7% C 0.152 H 26.3°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#901B1C
RGB	rgb(144, 27, 28)
HSL	hsl(359, 68%, 34%)
HSV	hsv(359, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 80.6%, 43.5%)
CIE-LAB	lab(31.34, 47.49, 30.93)
CIE-LCH	lch(31.34, 56.67, 33.08°)
OKLab	oklab(42.65% 0.1366 0.0674)
OKLCH	oklch(42.65% 0.152 26.3)
XYZ	xyz(12.1046, 6.7990, 1.7734)
Luminance	0.0680 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B1C #1B908F

analogous

#901B56 #901B1C #90541B

triadic

#901B1C #1C901B #1B1C90

tetradic

#901B1C #56901B #1B908F #541B90

square

#901B1C #56901B #1B908F #541B90

split-complementary

#901B1C #1B9054 #1B5690

monochromatic

#290808 #5C1112 #901B1C #C42526 #DD494A

Accessibility & contrast

On white

8.90

#901B1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#901B1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B1C

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B1C	#FFFFFF	#000000	##FFFFFF
##901B1C	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)

#403A1A

Deuteranopia (green-blind)

#5D5317

Tritanopia (blue-blind)

#9F001D

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b1c;
/* rgb */ color: rgb(144, 27, 28);
/* oklch */ color: oklch(42.7% 0.152 26.3);

Tailwind

colors: {
  custom: {
    50: '#b96459',
    500: '#901b1c',
    950: '#000000',
  },
}

SCSS

$custom: #901b1c;
$custom-light: #b96459;
$custom-dark: #000000;

JSON

{
  "hex": "#901b1c",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 28
  },
  "hsl": {
    "h": 359.487,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42651,
    "c": 0.15236,
    "h": 26.3
  },
  "luminance": 0.06797
}

Semantic roles & 50–950 ramp

primary

#901B1C

secondary

#48BFBE

accent

#EBEA3D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #901B1C

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

Preview Lab → · Contrast checker → · Palette generator →