#5B231B#5B231B

#5B231B is a dark, moderate red. Relative luminance 0.035; OKLCH L 33.7% C 0.084 H 30.3°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#5B231B
RGB	rgb(91, 35, 27)
HSL	hsl(8, 54%, 23%)
HSV	hsv(8, 70%, 36%)
CMYK	cmyk(0%, 61.5%, 70.3%, 64.3%)
CIE-LAB	lab(21.97, 25.11, 18.12)
CIE-LCH	lch(21.97, 30.96, 35.81°)
OKLab	oklab(33.68% 0.0729 0.0426)
OKLCH	oklch(33.68% 0.084 30.3)
XYZ	xyz(5.1137, 3.5060, 1.4441)
Luminance	0.0350 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B231B #1B535B

analogous

#5B1B33 #5B231B #5B431B

triadic

#5B231B #1B5B23 #231B5B

tetradic

#5B231B #335B1B #1B535B #431B5B

square

#5B231B #335B1B #1B535B #431B5B

split-complementary

#5B231B #1B5B43 #1B335B

monochromatic

#180907 #2C110D #5B231B #8A3529 #B94737

Accessibility & contrast

On white

12.35

#5B231B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#5B231B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5B231B

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B231B	#FFFFFF	#000000	##FFFFFF
##5B231B	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#322D1A

Deuteranopia (green-blind)

#3F391A

Tritanopia (blue-blind)

#641821

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #5b231b;
/* rgb */ color: rgb(91, 35, 27);
/* oklch */ color: oklch(33.7% 0.084 30.3);

Tailwind

colors: {
  custom: {
    50: '#8e6057',
    500: '#5b231b',
    950: '#000000',
  },
}

SCSS

$custom: #5b231b;
$custom-light: #8e6057;
$custom-dark: #000000;

JSON

{
  "hex": "#5b231b",
  "rgb": {
    "r": 91,
    "g": 35,
    "b": 27
  },
  "hsl": {
    "h": 7.5,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33685,
    "c": 0.08441,
    "h": 30.3
  },
  "luminance": 0.03505
}

Semantic roles & 50–950 ramp

primary

#5B231B

secondary

#418791

accent

#CBDE4A

background

#F9F5F5

surface

#F1E9E9

border

#CBC5C5

text

#0D0503

muted

#7E7978

Preview Lab

Preview with #5B231B

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

Preview Lab → · Contrast checker → · Palette generator →