#5B101F#5B101F

#5B101F is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.3% C 0.106 H 15.0°. Best body text is #FFFFFF at 13.65:1 contrast (WCAG AA passes).

Color values

HEX	#5B101F
RGB	rgb(91, 16, 31)
HSL	hsl(348, 70%, 21%)
HSV	hsv(348, 82%, 36%)
CMYK	cmyk(0%, 82.4%, 65.9%, 64.3%)
CIE-LAB	lab(18.78, 34.24, 11.32)
CIE-LCH	lch(18.78, 36.07, 18.29°)
OKLab	oklab(31.32% 0.1027 0.0276)
OKLCH	oklch(31.32% 0.106 15)
XYZ	xyz(4.7475, 2.6944, 1.5661)
Luminance	0.0269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B101F #105B4C

analogous

#5B1044 #5B101F #5B2610

triadic

#5B101F #1F5B10 #101F5B

tetradic

#5B101F #445B10 #105B4C #26105B

square

#5B101F #445B10 #105B4C #26105B

split-complementary

#5B101F #105B26 #10445B

monochromatic

#1A0509 #27070D #5B101F #8F1931 #C32242

Accessibility & contrast

On white

13.65

#5B101F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#5B101F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B101F

13.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B101F	#FFFFFF	#000000	##FFFFFF
##5B101F	1.00	13.65	1.54	13.65
#FFFFFF	13.65	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25241F

Deuteranopia (green-blind)

#38331D

Tritanopia (blue-blind)

#640016

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #5b101f;
/* rgb */ color: rgb(91, 16, 31);
/* oklch */ color: oklch(31.3% 0.106 15.0);

Tailwind

colors: {
  custom: {
    50: '#8f565a',
    500: '#5b101f',
    950: '#000000',
  },
}

SCSS

$custom: #5b101f;
$custom-light: #8f565a;
$custom-dark: #000000;

JSON

{
  "hex": "#5b101f",
  "rgb": {
    "r": 91,
    "g": 16,
    "b": 31
  },
  "hsl": {
    "h": 348,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31322,
    "c": 0.10634,
    "h": 15
  },
  "luminance": 0.02694
}

Semantic roles & 50–950 ramp

primary

#5B101F

secondary

#339481

accent

#EDC93B

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0303

muted

#7E7878

Preview Lab

Preview with #5B101F

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

Preview Lab → · Contrast checker → · Palette generator →