#5B1121#5B1121

#5B1121 is a dark, moderate red. Relative luminance 0.027; OKLCH L 31.5% C 0.105 H 13.7°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#5B1121
RGB	rgb(91, 17, 33)
HSL	hsl(347, 69%, 21%)
HSV	hsv(347, 81%, 36%)
CMYK	cmyk(0%, 81.3%, 63.7%, 64.3%)
CIE-LAB	lab(18.95, 34.03, 10.13)
CIE-LCH	lch(18.95, 35.51, 16.58°)
OKLab	oklab(31.47% 0.1024 0.025)
OKLCH	oklch(31.47% 0.105 13.7)
XYZ	xyz(4.7898, 2.7355, 1.7143)
Luminance	0.0273 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B1121 #115B4B

analogous

#5B1146 #5B1121 #5B2611

triadic

#5B1121 #215B11 #11215B

tetradic

#5B1121 #465B11 #115B4B #26115B

square

#5B1121 #465B11 #115B4B #26115B

split-complementary

#5B1121 #115B26 #11465B

monochromatic

#1A0509 #27070E #5B1121 #8F1B34 #C22446

Accessibility & contrast

On white

13.57

#5B1121 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#5B1121 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B1121

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B1121	#FFFFFF	#000000	##FFFFFF
##5B1121	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#252421

Deuteranopia (green-blind)

#38341F

Tritanopia (blue-blind)

#640018

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #5b1121;
/* rgb */ color: rgb(91, 17, 33);
/* oklch */ color: oklch(31.5% 0.105 13.7);

Tailwind

colors: {
  custom: {
    50: '#8f575b',
    500: '#5b1121',
    950: '#000000',
  },
}

SCSS

$custom: #5b1121;
$custom-light: #8f575b;
$custom-dark: #000000;

JSON

{
  "hex": "#5b1121",
  "rgb": {
    "r": 91,
    "g": 17,
    "b": 33
  },
  "hsl": {
    "h": 347.027,
    "s": 68.519,
    "l": 21.176
  },
  "oklch": {
    "l": 0.31468,
    "c": 0.10542,
    "h": 13.7
  },
  "luminance": 0.02735
}

Semantic roles & 50–950 ramp

primary

#5B1121

secondary

#34947F

accent

#EBC63C

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0304

muted

#7E7879

Preview Lab

Preview with #5B1121

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

Preview Lab → · Contrast checker → · Palette generator →