#5B131B#5B131B

#5B131B is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.5% C 0.103 H 19.6°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#5B131B
RGB	rgb(91, 19, 27)
HSL	hsl(353, 65%, 22%)
HSV	hsv(353, 79%, 36%)
CMYK	cmyk(0%, 79.1%, 70.3%, 64.3%)
CIE-LAB	lab(19.10, 32.83, 14.55)
CIE-LCH	lch(19.10, 35.91, 23.90°)
OKLab	oklab(31.53% 0.0973 0.0346)
OKLCH	oklch(31.53% 0.103 19.6)
XYZ	xyz(4.7456, 2.7697, 1.3214)
Luminance	0.0277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B131B #135B53

analogous

#5B133F #5B131B #5B2F13

triadic

#5B131B #1B5B13 #131B5B

tetradic

#5B131B #3F5B13 #135B53 #2F135B

square

#5B131B #3F5B13 #135B53 #2F135B

split-complementary

#5B131B #135B2F #133F5B

monochromatic

#190508 #28080C #5B131B #8E1E2A #C02839

Accessibility & contrast

On white

13.52

#5B131B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#5B131B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B131B

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B131B	#FFFFFF	#000000	##FFFFFF
##5B131B	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27251B

Deuteranopia (green-blind)

#393419

Tritanopia (blue-blind)

#650017

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #5b131b;
/* rgb */ color: rgb(91, 19, 27);
/* oklch */ color: oklch(31.5% 0.103 19.6);

Tailwind

colors: {
  custom: {
    50: '#8f5757',
    500: '#5b131b',
    950: '#000000',
  },
}

SCSS

$custom: #5b131b;
$custom-light: #8f5757;
$custom-dark: #000000;

JSON

{
  "hex": "#5b131b",
  "rgb": {
    "r": 91,
    "g": 19,
    "b": 27
  },
  "hsl": {
    "h": 353.333,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31533,
    "c": 0.10323,
    "h": 19.6
  },
  "luminance": 0.02769
}

Semantic roles & 50–950 ramp

primary

#5B131B

secondary

#379389

accent

#E8D63F

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0303

muted

#7E7878

Preview Lab

Preview with #5B131B

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

Preview Lab → · Contrast checker → · Palette generator →