#5B1011#5B1011

#5B1011 is a dark, moderate red. Relative luminance 0.026; OKLCH L 31.1% C 0.107 H 25.5°. Best body text is #FFFFFF at 13.75:1 contrast (WCAG AA passes).

Color values

HEX	#5B1011
RGB	rgb(91, 16, 17)
HSL	hsl(359, 70%, 21%)
HSV	hsv(359, 82%, 36%)
CMYK	cmyk(0%, 82.4%, 81.3%, 64.3%)
CIE-LAB	lab(18.52, 33.43, 20.54)
CIE-LCH	lch(18.52, 39.23, 31.57°)
OKLab	oklab(31.05% 0.0967 0.0461)
OKLCH	oklch(31.05% 0.107 25.5)
XYZ	xyz(4.6014, 2.6359, 0.7967)
Luminance	0.0263 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B1011 #105B5A

analogous

#5B1036 #5B1011 #5B3410

triadic

#5B1011 #115B10 #10115B

tetradic

#5B1011 #365B10 #105B5A #34105B

square

#5B1011 #365B10 #105B5A #34105B

split-complementary

#5B1011 #105B34 #10365B

monochromatic

#1A0505 #270707 #5B1011 #8F191B #C32224

Accessibility & contrast

On white

13.75

#5B1011 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#5B1011 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B1011

13.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B1011	#FFFFFF	#000000	##FFFFFF
##5B1011	1.00	13.75	1.53	13.75
#FFFFFF	13.75	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272310

Deuteranopia (green-blind)

#39330E

Tritanopia (blue-blind)

#650011

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #5b1011;
/* rgb */ color: rgb(91, 16, 17);
/* oklch */ color: oklch(31.1% 0.107 25.5);

Tailwind

colors: {
  custom: {
    50: '#90564f',
    500: '#5b1011',
    950: '#000000',
  },
}

SCSS

$custom: #5b1011;
$custom-light: #90564f;
$custom-dark: #000000;

JSON

{
  "hex": "#5b1011",
  "rgb": {
    "r": 91,
    "g": 16,
    "b": 17
  },
  "hsl": {
    "h": 359.2,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31053,
    "c": 0.10713,
    "h": 25.5
  },
  "luminance": 0.02635
}

Semantic roles & 50–950 ramp

primary

#5B1011

secondary

#339493

accent

#EDEB3B

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0E0302

muted

#7E7878

Preview Lab

Preview with #5B1011

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

Preview Lab → · Contrast checker → · Palette generator →