#5B151C#5B151C

#5B151C is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.8% C 0.101 H 19.7°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#5B151C
RGB	rgb(91, 21, 28)
HSL	hsl(354, 63%, 22%)
HSV	hsv(354, 77%, 36%)
CMYK	cmyk(0%, 76.9%, 69.2%, 64.3%)
CIE-LAB	lab(19.41, 32.08, 14.25)
CIE-LCH	lch(19.41, 35.11, 23.96°)
OKLab	oklab(31.77% 0.0951 0.034)
OKLCH	oklch(31.77% 0.101 19.7)
XYZ	xyz(4.7926, 2.8450, 1.3952)
Luminance	0.0284 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B151C #155B54

analogous

#5B153F #5B151C #5B3115

triadic

#5B151C #1C5B15 #151C5B

tetradic

#5B151C #3F5B15 #155B54 #31155B

square

#5B151C #3F5B15 #155B54 #31155B

split-complementary

#5B151C #155B31 #153F5B

monochromatic

#190608 #290A0D #5B151C #8D202B #BE2C3B

Accessibility & contrast

On white

13.39

#5B151C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#5B151C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B151C

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B151C	#FFFFFF	#000000	##FFFFFF
##5B151C	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28261C

Deuteranopia (green-blind)

#3A341A

Tritanopia (blue-blind)

#640218

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #5b151c;
/* rgb */ color: rgb(91, 21, 28);
/* oklch */ color: oklch(31.8% 0.101 19.7);

Tailwind

colors: {
  custom: {
    50: '#8f5857',
    500: '#5b151c',
    950: '#000000',
  },
}

SCSS

$custom: #5b151c;
$custom-light: #8f5857;
$custom-dark: #000000;

JSON

{
  "hex": "#5b151c",
  "rgb": {
    "r": 91,
    "g": 21,
    "b": 28
  },
  "hsl": {
    "h": 354,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.31774,
    "c": 0.10101,
    "h": 19.7
  },
  "luminance": 0.02844
}

Semantic roles & 50–950 ramp

primary

#5B151C

secondary

#39928A

accent

#E6D542

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #5B151C

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

Preview Lab → · Contrast checker → · Palette generator →