#CC3637#CC3637

#CC3637 is a mid, vivid red. Relative luminance 0.158; OKLCH L 56.3% C 0.187 H 25.3°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#CC3637
RGB	rgb(204, 54, 55)
HSL	hsl(360, 60%, 51%)
HSV	hsv(360, 74%, 80%)
CMYK	cmyk(0%, 73.5%, 73%, 20%)
CIE-LAB	lab(46.65, 58.28, 35.28)
CIE-LCH	lch(46.65, 68.13, 31.19°)
OKLab	oklab(56.26% 0.1691 0.0798)
OKLCH	oklch(56.26% 0.187 25.3)
XYZ	xyz(26.9137, 15.7557, 5.2377)
Luminance	0.1575 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CC3637 #36CCCB

analogous

#CC3682 #CC3637 #CC8036

triadic

#CC3637 #37CC36 #3637CC

tetradic

#CC3637 #82CC36 #36CCCB #8036CC

square

#CC3637 #82CC36 #36CCCB #8036CC

split-complementary

#CC3637 #36CC80 #3682CC

monochromatic

#6C1B1C #9D2829 #CC3637 #D86768 #E59898

Accessibility & contrast

On white

5.06

#CC3637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#CC3637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CC3637

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CC3637	#FFFFFF	#000000	##FFFFFF
##CC3637	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625A35

Deuteranopia (green-blind)

#887A32

Tritanopia (blue-blind)

#E00038

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cc3637;
/* rgb */ color: rgb(204, 54, 55);
/* oklch */ color: oklch(56.3% 0.187 25.3);

Tailwind

colors: {
  custom: {
    50: '#e4786e',
    500: '#cc3637',
    950: '#000000',
  },
}

SCSS

$custom: #cc3637;
$custom-light: #e4786e;
$custom-dark: #000000;

JSON

{
  "hex": "#cc3637",
  "rgb": {
    "r": 204,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.6,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.56261,
    "c": 0.187,
    "h": 25.3
  },
  "luminance": 0.15752
}

Semantic roles & 50–950 ramp

primary

#CC3637

secondary

#8ED0D0

accent

#E3E245

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CC3637

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

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