#5B101E#5B101E

#5B101E is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.3% C 0.106 H 15.9°. Best body text is #FFFFFF at 13.66:1 contrast (WCAG AA passes).

Color values

HEX	#5B101E
RGB	rgb(91, 16, 30)
HSL	hsl(349, 70%, 21%)
HSV	hsv(349, 82%, 36%)
CMYK	cmyk(0%, 82.4%, 67%, 64.3%)
CIE-LAB	lab(18.75, 34.17, 12.00)
CIE-LCH	lch(18.75, 36.22, 19.35°)
OKLab	oklab(31.3% 0.1022 0.0291)
OKLCH	oklch(31.3% 0.106 15.9)
XYZ	xyz(4.7345, 2.6892, 1.4978)
Luminance	0.0269 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B101E #105B4D

analogous

#5B1043 #5B101E #5B2710

triadic

#5B101E #1E5B10 #101E5B

tetradic

#5B101E #435B10 #105B4D #27105B

square

#5B101E #435B10 #105B4D #27105B

split-complementary

#5B101E #105B27 #10435B

monochromatic

#1A0509 #27070D #5B101E #8F192F #C32240

Accessibility & contrast

On white

13.66

#5B101E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#5B101E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B101E

13.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B101E	#FFFFFF	#000000	##FFFFFF
##5B101E	1.00	13.66	1.54	13.66
#FFFFFF	13.66	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25241E

Deuteranopia (green-blind)

#38331C

Tritanopia (blue-blind)

#640016

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #5b101e;
/* rgb */ color: rgb(91, 16, 30);
/* oklch */ color: oklch(31.3% 0.106 15.9);

Tailwind

colors: {
  custom: {
    50: '#8f5659',
    500: '#5b101e',
    950: '#000000',
  },
}

SCSS

$custom: #5b101e;
$custom-light: #8f5659;
$custom-dark: #000000;

JSON

{
  "hex": "#5b101e",
  "rgb": {
    "r": 91,
    "g": 16,
    "b": 30
  },
  "hsl": {
    "h": 348.8,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31298,
    "c": 0.1063,
    "h": 15.9
  },
  "luminance": 0.02688
}

Semantic roles & 50–950 ramp

primary

#5B101E

secondary

#339482

accent

#EDCC3B

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0303

muted

#7E7878

Preview Lab

Preview with #5B101E

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

Preview Lab → · Contrast checker → · Palette generator →