#CC3738#CC3738

#CC3738 is a mid, vivid red. Relative luminance 0.159; OKLCH L 56.4% C 0.186 H 25.2°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#CC3738
RGB	rgb(204, 55, 56)
HSL	hsl(360, 59%, 51%)
HSV	hsv(360, 73%, 80%)
CMYK	cmyk(0%, 73%, 72.5%, 20%)
CIE-LAB	lab(46.79, 57.98, 34.86)
CIE-LCH	lch(46.79, 67.65, 31.02°)
OKLab	oklab(56.37% 0.1684 0.0791)
OKLCH	oklch(56.37% 0.186 25.2)
XYZ	xyz(26.9849, 15.8594, 5.3809)
Luminance	0.1585 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CC3738 #37CCCB

analogous

#CC3782 #CC3738 #CC8037

triadic

#CC3738 #38CC37 #3738CC

tetradic

#CC3738 #82CC37 #37CCCB #8037CC

square

#CC3738 #82CC37 #37CCCB #8037CC

split-complementary

#CC3738 #37CC80 #3782CC

monochromatic

#6D1C1C #9E2829 #CC3738 #D86869 #E59999

Accessibility & contrast

On white

5.03

#CC3738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#CC3738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CC3738

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CC3738	#FFFFFF	#000000	##FFFFFF
##CC3738	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635A36

Deuteranopia (green-blind)

#887B33

Tritanopia (blue-blind)

#E00039

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cc3738;
/* rgb */ color: rgb(204, 55, 56);
/* oklch */ color: oklch(56.4% 0.186 25.2);

Tailwind

colors: {
  custom: {
    50: '#e4796f',
    500: '#cc3738',
    950: '#000000',
  },
}

SCSS

$custom: #cc3738;
$custom-light: #e4796f;
$custom-dark: #000000;

JSON

{
  "hex": "#cc3738",
  "rgb": {
    "r": 204,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.597,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56367,
    "c": 0.18603,
    "h": 25.2
  },
  "luminance": 0.15855
}

Semantic roles & 50–950 ramp

primary

#CC3738

secondary

#8ED0D0

accent

#E3E145

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CC3738

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

Preview Lab → · Contrast checker → · Palette generator →