#C43740#C43740

#C43740 is a mid, vivid red. Relative luminance 0.148; OKLCH L 55.1% C 0.177 H 21.9°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#C43740
RGB	rgb(196, 55, 64)
HSL	hsl(356, 56%, 49%)
HSV	hsv(356, 72%, 77%)
CMYK	cmyk(0%, 71.9%, 67.3%, 23.1%)
CIE-LAB	lab(45.42, 55.88, 28.15)
CIE-LCH	lch(45.42, 62.57, 26.74°)
OKLab	oklab(55.11% 0.1644 0.066)
OKLCH	oklch(55.11% 0.177 21.9)
XYZ	xyz(25.0593, 14.8420, 6.3948)
Luminance	0.1484 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C43740 #37C4BB

analogous

#C43787 #C43740 #C47537

triadic

#C43740 #40C437 #3740C4

tetradic

#C43740 #87C437 #37C4BB #7537C4

square

#C43740 #87C437 #37C4BB #7537C4

split-complementary

#C43740 #37C475 #3787C4

monochromatic

#641C21 #942A30 #C43740 #D4656C #E19499

Accessibility & contrast

On white

5.29

#C43740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#C43740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C43740

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C43740	#FFFFFF	#000000	##FFFFFF
##C43740	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F583F

Deuteranopia (green-blind)

#82763C

Tritanopia (blue-blind)

#D7003C

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #c43740;
/* rgb */ color: rgb(196, 55, 64);
/* oklch */ color: oklch(55.1% 0.177 21.9);

Tailwind

colors: {
  custom: {
    50: '#de7874',
    500: '#c43740',
    950: '#000000',
  },
}

SCSS

$custom: #c43740;
$custom-light: #de7874;
$custom-dark: #000000;

JSON

{
  "hex": "#c43740",
  "rgb": {
    "r": 196,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 356.17,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.55111,
    "c": 0.1772,
    "h": 21.9
  },
  "luminance": 0.14838
}

Semantic roles & 50–950 ramp

primary

#C43740

secondary

#8BCCC8

accent

#DFD648

background

#FEF7F7

surface

#FDEEED

border

#D5C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #C43740

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

Preview Lab → · Contrast checker → · Palette generator →