#C43F37#C43F37

#C43F37 is a mid, vivid red. Relative luminance 0.156; OKLCH L 55.8% C 0.171 H 27.5°. Best body text is #FFFFFF at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#C43F37
RGB	rgb(196, 63, 55)
HSL	hsl(3, 56%, 49%)
HSV	hsv(3, 72%, 77%)
CMYK	cmyk(0%, 67.9%, 71.9%, 23.1%)
CIE-LAB	lab(46.41, 52.37, 34.62)
CIE-LCH	lch(46.41, 62.78, 33.46°)
OKLab	oklab(55.81% 0.1514 0.0788)
OKLCH	oklch(55.81% 0.171 27.5)
XYZ	xyz(25.2348, 15.5703, 5.2903)
Luminance	0.1557 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C43F37 #37BCC4

analogous

#C43776 #C43F37 #C48637

triadic

#C43F37 #37C43F #3F37C4

tetradic

#C43F37 #76C437 #37BCC4 #8637C4

square

#C43F37 #76C437 #37BCC4 #8637C4

split-complementary

#C43F37 #37C486 #3776C4

monochromatic

#64201C #94302A #C43F37 #D46B65 #E19994

Accessibility & contrast

On white

5.11

#C43F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#C43F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C43F37

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C43F37	#FFFFFF	#000000	##FFFFFF
##C43F37	1.00	5.11	4.11	5.11
#FFFFFF	5.11	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C35

Deuteranopia (green-blind)

#867933

Tritanopia (blue-blind)

#D7173E

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #c43f37;
/* rgb */ color: rgb(196, 63, 55);
/* oklch */ color: oklch(55.8% 0.171 27.5);

Tailwind

colors: {
  custom: {
    50: '#de7c6e',
    500: '#c43f37',
    950: '#000000',
  },
}

SCSS

$custom: #c43f37;
$custom-light: #de7c6e;
$custom-dark: #000000;

JSON

{
  "hex": "#c43f37",
  "rgb": {
    "r": 196,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 3.404,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.55808,
    "c": 0.17071,
    "h": 27.5
  },
  "luminance": 0.15567
}

Semantic roles & 50–950 ramp

primary

#C43F37

secondary

#8BC9CC

accent

#D7DF48

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C43F37

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

Preview Lab → · Contrast checker → · Palette generator →