#5B151F#5B151F

#5B151F is a dark, moderate red. Relative luminance 0.029; OKLCH L 31.8% C 0.101 H 17.1°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#5B151F
RGB	rgb(91, 21, 31)
HSL	hsl(351, 63%, 22%)
HSV	hsv(351, 77%, 36%)
CMYK	cmyk(0%, 76.9%, 65.9%, 64.3%)
CIE-LAB	lab(19.47, 32.30, 12.24)
CIE-LCH	lch(19.47, 34.54, 20.76°)
OKLab	oklab(31.84% 0.0964 0.0297)
OKLCH	oklch(31.84% 0.101 17.1)
XYZ	xyz(4.8304, 2.8601, 1.5938)
Luminance	0.0286 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B151F #155B51

analogous

#5B1542 #5B151F #5B2E15

triadic

#5B151F #1F5B15 #151F5B

tetradic

#5B151F #425B15 #155B51 #2E155B

square

#5B151F #425B15 #155B51 #2E155B

split-complementary

#5B151F #155B2E #15425B

monochromatic

#190608 #290A0E #5B151F #8D2030 #BE2C41

Accessibility & contrast

On white

13.36

#5B151F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#5B151F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B151F

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B151F	#FFFFFF	#000000	##FFFFFF
##5B151F	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28261F

Deuteranopia (green-blind)

#3A351D

Tritanopia (blue-blind)

#640319

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #5b151f;
/* rgb */ color: rgb(91, 21, 31);
/* oklch */ color: oklch(31.8% 0.101 17.1);

Tailwind

colors: {
  custom: {
    50: '#8f585a',
    500: '#5b151f',
    950: '#000000',
  },
}

SCSS

$custom: #5b151f;
$custom-light: #8f585a;
$custom-dark: #000000;

JSON

{
  "hex": "#5b151f",
  "rgb": {
    "r": 91,
    "g": 21,
    "b": 31
  },
  "hsl": {
    "h": 351.429,
    "s": 62.5,
    "l": 21.961
  },
  "oklch": {
    "l": 0.31841,
    "c": 0.10092,
    "h": 17.1
  },
  "luminance": 0.02859
}

Semantic roles & 50–950 ramp

primary

#5B151F

secondary

#399286

accent

#E6CE42

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #5B151F

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

Preview Lab → · Contrast checker → · Palette generator →