#CC3F37#CC3F37

#CC3F37 is a mid, vivid red. Relative luminance 0.167; OKLCH L 57.2% C 0.179 H 27.5°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#CC3F37
RGB	rgb(204, 63, 55)
HSL	hsl(3, 59%, 51%)
HSV	hsv(3, 73%, 80%)
CMYK	cmyk(0%, 69.1%, 73%, 20%)
CIE-LAB	lab(47.84, 54.99, 36.64)
CIE-LCH	lch(47.84, 66.08, 33.67°)
OKLab	oklab(57.15% 0.1588 0.0828)
OKLCH	oklch(57.15% 0.179 27.5)
XYZ	xyz(27.3720, 16.6723, 5.3905)
Luminance	0.1667 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CC3F37 #37C4CC

analogous

#CC377A #CC3F37 #CC8937

triadic

#CC3F37 #37CC3F #3F37CC

tetradic

#CC3F37 #7ACC37 #37C4CC #8937CC

square

#CC3F37 #7ACC37 #37C4CC #8937CC

split-complementary

#CC3F37 #37CC89 #377ACC

monochromatic

#6D201C #9E2E28 #CC3F37 #D86E68 #E59D99

Accessibility & contrast

On white

4.85

#CC3F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#CC3F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CC3F37

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CC3F37	#FFFFFF	#000000	##FFFFFF
##CC3F37	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675E35

Deuteranopia (green-blind)

#8A7D32

Tritanopia (blue-blind)

#E00E3E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cc3f37;
/* rgb */ color: rgb(204, 63, 55);
/* oklch */ color: oklch(57.2% 0.179 27.5);

Tailwind

colors: {
  custom: {
    50: '#e47d6e',
    500: '#cc3f37',
    950: '#000000',
  },
}

SCSS

$custom: #cc3f37;
$custom-light: #e47d6e;
$custom-dark: #000000;

JSON

{
  "hex": "#cc3f37",
  "rgb": {
    "r": 204,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 3.221,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57151,
    "c": 0.17903,
    "h": 27.5
  },
  "luminance": 0.16668
}

Semantic roles & 50–950 ramp

primary

#CC3F37

secondary

#8ECDD0

accent

#DAE345

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CC3F37

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

Preview Lab → · Contrast checker → · Palette generator →