#901B1F#901B1F

#901B1F is a dark, vivid red. Relative luminance 0.068; OKLCH L 42.7% C 0.152 H 25.1°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#901B1F
RGB	rgb(144, 27, 31)
HSL	hsl(358, 68%, 34%)
HSV	hsv(358, 81%, 56%)
CMYK	cmyk(0%, 81.3%, 78.5%, 43.5%)
CIE-LAB	lab(31.38, 47.60, 29.17)
CIE-LCH	lch(31.38, 55.82, 31.50°)
OKLab	oklab(42.69% 0.1377 0.0645)
OKLCH	oklch(42.69% 0.152 25.1)
XYZ	xyz(12.1423, 6.8140, 1.9720)
Luminance	0.0681 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901B1F #1B908C

analogous

#901B59 #901B1F #90511B

triadic

#901B1F #1F901B #1B1F90

tetradic

#901B1F #59901B #1B908C #511B90

square

#901B1F #59901B #1B908C #511B90

split-complementary

#901B1F #1B9051 #1B5990

monochromatic

#290809 #5C1114 #901B1F #C4252A #DD494E

Accessibility & contrast

On white

8.89

#901B1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#901B1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901B1F

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901B1F	#FFFFFF	#000000	##FFFFFF
##901B1F	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)

#403A1E

Deuteranopia (green-blind)

#5D531A

Tritanopia (blue-blind)

#9F001E

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #901b1f;
/* rgb */ color: rgb(144, 27, 31);
/* oklch */ color: oklch(42.7% 0.152 25.1);

Tailwind

colors: {
  custom: {
    50: '#b9645b',
    500: '#901b1f',
    950: '#000000',
  },
}

SCSS

$custom: #901b1f;
$custom-light: #b9645b;
$custom-dark: #000000;

JSON

{
  "hex": "#901b1f",
  "rgb": {
    "r": 144,
    "g": 27,
    "b": 31
  },
  "hsl": {
    "h": 357.949,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.42688,
    "c": 0.15203,
    "h": 25.1
  },
  "luminance": 0.06812
}

Semantic roles & 50–950 ramp

primary

#901B1F

secondary

#48BFBB

accent

#EBE53D

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130604

muted

#827A79

Preview Lab

Preview with #901B1F

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

Preview Lab → · Contrast checker → · Palette generator →