#5B1510#5B1510

#5B1510 is a dark, moderate red. Relative luminance 0.028; OKLCH L 31.6% C 0.103 H 28.5°. Best body text is #FFFFFF at 13.46:1 contrast (WCAG AA passes).

Color values

HEX	#5B1510
RGB	rgb(91, 21, 16)
HSL	hsl(4, 70%, 21%)
HSV	hsv(4, 82%, 36%)
CMYK	cmyk(0%, 76.9%, 82.4%, 64.3%)
CIE-LAB	lab(19.22, 31.41, 21.92)
CIE-LCH	lch(19.22, 38.31, 34.91°)
OKLab	oklab(31.57% 0.0901 0.0489)
OKLCH	oklch(31.57% 0.103 28.5)
XYZ	xyz(4.6766, 2.7986, 0.7840)
Luminance	0.0280 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B1510 #10565B

analogous

#5B1030 #5B1510 #5B3A10

triadic

#5B1510 #105B15 #15105B

tetradic

#5B1510 #305B10 #10565B #3A105B

square

#5B1510 #305B10 #10565B #3A105B

split-complementary

#5B1510 #105B3A #10305B

monochromatic

#1A0605 #270907 #5B1510 #8F2119 #C32D22

Accessibility & contrast

On white

13.46

#5B1510 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#5B1510 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B1510

13.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B1510	#FFFFFF	#000000	##FFFFFF
##5B1510	1.00	13.46	1.56	13.46
#FFFFFF	13.46	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A250F

Deuteranopia (green-blind)

#3B340D

Tritanopia (blue-blind)

#650015

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #5b1510;
/* rgb */ color: rgb(91, 21, 16);
/* oklch */ color: oklch(31.6% 0.103 28.5);

Tailwind

colors: {
  custom: {
    50: '#90584e',
    500: '#5b1510',
    950: '#000000',
  },
}

SCSS

$custom: #5b1510;
$custom-light: #90584e;
$custom-dark: #000000;

JSON

{
  "hex": "#5b1510",
  "rgb": {
    "r": 91,
    "g": 21,
    "b": 16
  },
  "hsl": {
    "h": 4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.31568,
    "c": 0.10251,
    "h": 28.5
  },
  "luminance": 0.02798
}

Semantic roles & 50–950 ramp

primary

#5B1510

secondary

#338E94

accent

#E1ED3B

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0E0301

muted

#7E7877

Preview Lab

Preview with #5B1510

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

Preview Lab → · Contrast checker → · Palette generator →