#C43B37#C43B37

#C43B37 is a mid, vivid red. Relative luminance 0.151; OKLCH L 55.4% C 0.174 H 26.3°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#C43B37
RGB	rgb(196, 59, 55)
HSL	hsl(2, 56%, 49%)
HSV	hsv(2, 72%, 77%)
CMYK	cmyk(0%, 69.9%, 71.9%, 23.1%)
CIE-LAB	lab(45.83, 53.94, 33.95)
CIE-LCH	lch(45.83, 63.74, 32.19°)
OKLab	oklab(55.38% 0.1564 0.0773)
OKLCH	oklch(55.38% 0.174 26.3)
XYZ	xyz(25.0213, 15.1432, 5.2191)
Luminance	0.1514 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C43B37 #37C0C4

analogous

#C4377A #C43B37 #C48237

triadic

#C43B37 #37C43B #3B37C4

tetradic

#C43B37 #7AC437 #37C0C4 #8237C4

square

#C43B37 #7AC437 #37C0C4 #8237C4

split-complementary

#C43B37 #37C482 #377AC4

monochromatic

#641E1C #942D2A #C43B37 #D46865 #E19794

Accessibility & contrast

On white

5.21

#C43B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#C43B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C43B37

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C43B37	#FFFFFF	#000000	##FFFFFF
##C43B37	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625A35

Deuteranopia (green-blind)

#847732

Tritanopia (blue-blind)

#D70A3C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #c43b37;
/* rgb */ color: rgb(196, 59, 55);
/* oklch */ color: oklch(55.4% 0.174 26.3);

Tailwind

colors: {
  custom: {
    50: '#de7a6e',
    500: '#c43b37',
    950: '#000000',
  },
}

SCSS

$custom: #c43b37;
$custom-light: #de7a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#c43b37",
  "rgb": {
    "r": 196,
    "g": 59,
    "b": 55
  },
  "hsl": {
    "h": 1.702,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.55377,
    "c": 0.17447,
    "h": 26.3
  },
  "luminance": 0.1514
}

Semantic roles & 50–950 ramp

primary

#C43B37

secondary

#8BCACC

accent

#DBDF48

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C43B37

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

Preview Lab → · Contrast checker → · Palette generator →