#CC3837#CC3837

#CC3837 is a mid, vivid red. Relative luminance 0.159; OKLCH L 56.4% C 0.185 H 25.7°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#CC3837
RGB	rgb(204, 56, 55)
HSL	hsl(0, 59%, 51%)
HSV	hsv(0, 73%, 80%)
CMYK	cmyk(0%, 72.5%, 73%, 20%)
CIE-LAB	lab(46.90, 57.58, 35.57)
CIE-LCH	lch(46.90, 67.68, 31.70°)
OKLab	oklab(56.45% 0.1669 0.0804)
OKLCH	oklch(56.45% 0.185 25.7)
XYZ	xyz(27.0087, 15.9457, 5.2694)
Luminance	0.1594 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CC3837 #37CBCC

analogous

#CC3780 #CC3837 #CC8237

triadic

#CC3837 #37CC38 #3837CC

tetradic

#CC3837 #80CC37 #37CBCC #8237CC

square

#CC3837 #80CC37 #37CBCC #8237CC

split-complementary

#CC3837 #37CC82 #3780CC

monochromatic

#6D1C1C #9E2928 #CC3837 #D86968 #E59999

Accessibility & contrast

On white

5.01

#CC3837 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#CC3837 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CC3837

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CC3837	#FFFFFF	#000000	##FFFFFF
##CC3837	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635B35

Deuteranopia (green-blind)

#887B32

Tritanopia (blue-blind)

#E0003A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cc3837;
/* rgb */ color: rgb(204, 56, 55);
/* oklch */ color: oklch(56.4% 0.185 25.7);

Tailwind

colors: {
  custom: {
    50: '#e4796e',
    500: '#cc3837',
    950: '#000000',
  },
}

SCSS

$custom: #cc3837;
$custom-light: #e4796e;
$custom-dark: #000000;

JSON

{
  "hex": "#cc3837",
  "rgb": {
    "r": 204,
    "g": 56,
    "b": 55
  },
  "hsl": {
    "h": 0.403,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56448,
    "c": 0.18529,
    "h": 25.7
  },
  "luminance": 0.15942
}

Semantic roles & 50–950 ramp

primary

#CC3837

secondary

#8ED0D0

accent

#E1E345

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CC3837

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

Preview Lab → · Contrast checker → · Palette generator →