#5B1018#5B1018

#5B1018 is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.2% C 0.106 H 20.6°. Best body text is #FFFFFF at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#5B1018
RGB	rgb(91, 16, 24)
HSL	hsl(354, 70%, 21%)
HSV	hsv(354, 82%, 36%)
CMYK	cmyk(0%, 82.4%, 73.6%, 64.3%)
CIE-LAB	lab(18.63, 33.79, 16.06)
CIE-LCH	lch(18.63, 37.41, 25.43°)
OKLab	oklab(31.17% 0.0996 0.0375)
OKLCH	oklch(31.17% 0.106 20.6)
XYZ	xyz(4.6651, 2.6614, 1.1320)
Luminance	0.0266 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B1018 #105B53

analogous

#5B103D #5B1018 #5B2D10

triadic

#5B1018 #185B10 #10185B

tetradic

#5B1018 #3D5B10 #105B53 #2D105B

square

#5B1018 #3D5B10 #105B53 #2D105B

split-complementary

#5B1018 #105B2D #103D5B

monochromatic

#1A0507 #27070A #5B1018 #8F1926 #C32233

Accessibility & contrast

On white

13.71

#5B1018 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#5B1018 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B1018

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B1018	#FFFFFF	#000000	##FFFFFF
##5B1018	1.00	13.71	1.53	13.71
#FFFFFF	13.71	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#262318

Deuteranopia (green-blind)

#393316

Tritanopia (blue-blind)

#650014

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #5b1018;
/* rgb */ color: rgb(91, 16, 24);
/* oklch */ color: oklch(31.2% 0.106 20.6);

Tailwind

colors: {
  custom: {
    50: '#905654',
    500: '#5b1018',
    950: '#000000',
  },
}

SCSS

$custom: #5b1018;
$custom-light: #905654;
$custom-dark: #000000;

JSON

{
  "hex": "#5b1018",
  "rgb": {
    "r": 91,
    "g": 16,
    "b": 24
  },
  "hsl": {
    "h": 353.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31171,
    "c": 0.10642,
    "h": 20.6
  },
  "luminance": 0.02661
}

Semantic roles & 50–950 ramp

primary

#5B1018

secondary

#33948A

accent

#EDDA3B

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0E0302

muted

#7E7878

Preview Lab

Preview with #5B1018

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

Preview Lab → · Contrast checker → · Palette generator →