#5B100E#5B100E

#5B100E is a dark, moderate red. Relative luminance 0.026; OKLCH L 31.0% C 0.108 H 27.3°. Best body text is #FFFFFF at 13.77:1 contrast (WCAG AA passes).

Color values

HEX	#5B100E
RGB	rgb(91, 16, 14)
HSL	hsl(2, 73%, 21%)
HSV	hsv(2, 85%, 36%)
CMYK	cmyk(0%, 82.4%, 84.6%, 64.3%)
CIE-LAB	lab(18.48, 33.30, 22.12)
CIE-LCH	lch(18.48, 39.98, 33.60°)
OKLab	oklab(31.01% 0.0956 0.0493)
OKLCH	oklch(31.01% 0.108 27.3)
XYZ	xyz(4.5795, 2.6272, 0.6813)
Luminance	0.0263 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B100E #0E595B

analogous

#5B0E32 #5B100E #5B360E

triadic

#5B100E #0E5B10 #100E5B

tetradic

#5B100E #325B0E #0E595B #360E5B

square

#5B100E #325B0E #0E595B #360E5B

split-complementary

#5B100E #0E5B36 #0E325B

monochromatic

#1B0504 #260706 #5B100E #901916 #C5231E

Accessibility & contrast

On white

13.77

#5B100E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#5B100E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B100E

13.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B100E	#FFFFFF	#000000	##FFFFFF
##5B100E	1.00	13.77	1.53	13.77
#FFFFFF	13.77	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27230D

Deuteranopia (green-blind)

#3A330B

Tritanopia (blue-blind)

#650011

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #5b100e;
/* rgb */ color: rgb(91, 16, 14);
/* oklch */ color: oklch(31.0% 0.108 27.3);

Tailwind

colors: {
  custom: {
    50: '#90564d',
    500: '#5b100e',
    950: '#000000',
  },
}

SCSS

$custom: #5b100e;
$custom-light: #90564d;
$custom-dark: #000000;

JSON

{
  "hex": "#5b100e",
  "rgb": {
    "r": 91,
    "g": 16,
    "b": 14
  },
  "hsl": {
    "h": 1.558,
    "s": 73.333,
    "l": 20.588
  },
  "oklch": {
    "l": 0.31012,
    "c": 0.10755,
    "h": 27.3
  },
  "luminance": 0.02626
}

Semantic roles & 50–950 ramp

primary

#5B100E

secondary

#309295

accent

#EBF038

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0E0301

muted

#7E7877

Preview Lab

Preview with #5B100E

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

Preview Lab → · Contrast checker → · Palette generator →