#5C181B#5C181B

#5C181B is a dark, moderate red. Relative luminance 0.030; OKLCH L 32.3% C 0.099 H 22.2°. Best body text is #FFFFFF at 13.11:1 contrast (WCAG AA passes).

Color values

HEX	#5C181B
RGB	rgb(92, 24, 27)
HSL	hsl(357, 59%, 23%)
HSV	hsv(357, 74%, 36%)
CMYK	cmyk(0%, 73.9%, 70.7%, 63.9%)
CIE-LAB	lab(20.08, 31.07, 15.83)
CIE-LCH	lch(20.08, 34.87, 27.00°)
OKLab	oklab(32.3% 0.0915 0.0374)
OKLCH	oklch(32.3% 0.099 22.2)
XYZ	xyz(4.9386, 3.0084, 1.3573)
Luminance	0.0301 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5C181B #185C59

analogous

#5C183D #5C181B #5C3718

triadic

#5C181B #1B5C18 #181B5C

tetradic

#5C181B #3D5C18 #185C59 #37185C

square

#5C181B #3D5C18 #185C59 #37185C

split-complementary

#5C181B #185C37 #183D5C

monochromatic

#180607 #2B0B0D #5C181B #8D2529 #BD3137

Accessibility & contrast

On white

13.11

#5C181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#5C181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #5C181B

13.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5C181B	#FFFFFF	#000000	##FFFFFF
##5C181B	1.00	13.11	1.60	13.11
#FFFFFF	13.11	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B271B

Deuteranopia (green-blind)

#3C3619

Tritanopia (blue-blind)

#66061A

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #5c181b;
/* rgb */ color: rgb(92, 24, 27);
/* oklch */ color: oklch(32.3% 0.099 22.2);

Tailwind

colors: {
  custom: {
    50: '#905a57',
    500: '#5c181b',
    950: '#000000',
  },
}

SCSS

$custom: #5c181b;
$custom-light: #905a57;
$custom-dark: #000000;

JSON

{
  "hex": "#5c181b",
  "rgb": {
    "r": 92,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 357.353,
    "s": 58.621,
    "l": 22.745
  },
  "oklch": {
    "l": 0.32302,
    "c": 0.09887,
    "h": 22.2
  },
  "luminance": 0.03008
}

Semantic roles & 50–950 ramp

primary

#5C181B

secondary

#3D938F

accent

#E2DB46

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0D0403

muted

#7E7978

Preview Lab

Preview with #5C181B

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

Preview Lab → · Contrast checker → · Palette generator →