#B03637#B03637

#B03637 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.158 H 24.2°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#B03637
RGB	rgb(176, 54, 55)
HSL	hsl(360, 53%, 45%)
HSV	hsv(360, 69%, 69%)
CMYK	cmyk(0%, 69.3%, 68.8%, 31%)
CIE-LAB	lab(41.45, 49.35, 27.86)
CIE-LCH	lch(41.45, 56.67, 29.45°)
OKLab	oklab(51.43% 0.1444 0.0649)
OKLCH	oklch(51.43% 0.158 24.2)
XYZ	xyz(19.9154, 12.1472, 4.9097)
Luminance	0.1214 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03637 #36B0AF

analogous

#B03674 #B03637 #B07236

triadic

#B03637 #37B036 #3637B0

tetradic

#B03637 #74B036 #36B0AF #7236B0

square

#B03637 #74B036 #36B0AF #7236B0

split-complementary

#B03637 #36B072 #3674B0

monochromatic

#52191A #812828 #B03637 #CC5859 #DA8687

Accessibility & contrast

On white

6.12

#B03637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B03637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03637

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03637	#FFFFFF	#000000	##FFFFFF
##B03637	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C11238

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b03637;
/* rgb */ color: rgb(176, 54, 55);
/* oklch */ color: oklch(51.4% 0.158 24.2);

Tailwind

colors: {
  custom: {
    50: '#cf756e',
    500: '#b03637',
    950: '#000000',
  },
}

SCSS

$custom: #b03637;
$custom-light: #cf756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b03637",
  "rgb": {
    "r": 176,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.508,
    "s": 53.043,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51428,
    "c": 0.15828,
    "h": 24.2
  },
  "luminance": 0.12144
}

Semantic roles & 50–950 ramp

primary

#B03637

secondary

#7EC4C3

accent

#DCDB4B

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B03637

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

Preview Lab → · Contrast checker → · Palette generator →