#CC3739#CC3739

#CC3739 is a mid, vivid red. Relative luminance 0.159; OKLCH L 56.4% C 0.186 H 24.8°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#CC3739
RGB	rgb(204, 55, 57)
HSL	hsl(359, 59%, 51%)
HSV	hsv(359, 73%, 80%)
CMYK	cmyk(0%, 73%, 72.1%, 20%)
CIE-LAB	lab(46.80, 58.02, 34.30)
CIE-LCH	lch(46.80, 67.40, 30.59°)
OKLab	oklab(56.38% 0.1687 0.0781)
OKLCH	oklch(56.38% 0.186 24.8)
XYZ	xyz(27.0096, 15.8693, 5.5110)
Luminance	0.1587 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CC3739 #37CCCA

analogous

#CC3783 #CC3739 #CC8037

triadic

#CC3739 #39CC37 #3739CC

tetradic

#CC3739 #83CC37 #37CCCA #8037CC

square

#CC3739 #83CC37 #37CCCA #8037CC

split-complementary

#CC3739 #37CC80 #3783CC

monochromatic

#6D1C1D #9E282A #CC3739 #D86869 #E5999A

Accessibility & contrast

On white

5.03

#CC3739 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#CC3739 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CC3739

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CC3739	#FFFFFF	#000000	##FFFFFF
##CC3739	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)

#635A37

Deuteranopia (green-blind)

#887B34

Tritanopia (blue-blind)

#E0003A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cc3739;
/* rgb */ color: rgb(204, 55, 57);
/* oklch */ color: oklch(56.4% 0.186 24.8);

Tailwind

colors: {
  custom: {
    50: '#e4796f',
    500: '#cc3739',
    950: '#000000',
  },
}

SCSS

$custom: #cc3739;
$custom-light: #e4796f;
$custom-dark: #000000;

JSON

{
  "hex": "#cc3739",
  "rgb": {
    "r": 204,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 359.195,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56381,
    "c": 0.18591,
    "h": 24.8
  },
  "luminance": 0.15865
}

Semantic roles & 50–950 ramp

primary

#CC3739

secondary

#8ED0D0

accent

#E3E045

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CC3739

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

Preview Lab → · Contrast checker → · Palette generator →