#D43837#D43837

#D43837 is a mid, vivid red. Relative luminance 0.171; OKLCH L 57.8% C 0.193 H 25.9°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#D43837
RGB	rgb(212, 56, 55)
HSL	hsl(0, 65%, 52%)
HSV	hsv(0, 74%, 83%)
CMYK	cmyk(0%, 73.6%, 74.1%, 16.9%)
CIE-LAB	lab(48.39, 60.05, 37.66)
CIE-LCH	lch(48.39, 70.88, 32.09°)
OKLab	oklab(57.83% 0.1737 0.0845)
OKLCH	oklch(57.83% 0.193 25.9)
XYZ	xyz(29.2585, 17.1057, 5.3748)
Luminance	0.1710 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D43837 #37D3D4

analogous

#D43785 #D43837 #D48637

triadic

#D43837 #37D438 #3837D4

tetradic

#D43837 #85D437 #37D3D4 #8637D4

square

#D43837 #85D437 #37D3D4 #8637D4

split-complementary

#D43837 #37D486 #3785D4

monochromatic

#771A1A #A92524 #D43837 #DF6A69 #EA9C9C

Accessibility & contrast

On white

4.75

#D43837 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#D43837 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #D43837

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D43837	#FFFFFF	#000000	##FFFFFF
##D43837	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665D35

Deuteranopia (green-blind)

#8D7F31

Tritanopia (blue-blind)

#E9003A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #d43837;
/* rgb */ color: rgb(212, 56, 55);
/* oklch */ color: oklch(57.8% 0.193 25.9);

Tailwind

colors: {
  custom: {
    50: '#ea7a6e',
    500: '#d43837',
    950: '#000000',
  },
}

SCSS

$custom: #d43837;
$custom-light: #ea7a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#d43837",
  "rgb": {
    "r": 212,
    "g": 56,
    "b": 55
  },
  "hsl": {
    "h": 0.382,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57828,
    "c": 0.19319,
    "h": 25.9
  },
  "luminance": 0.17101
}

Semantic roles & 50–950 ramp

primary

#D43837

secondary

#91D5D6

accent

#E7E840

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#180A07

muted

#867C7A

Preview Lab

Preview with #D43837

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

Preview Lab → · Contrast checker → · Palette generator →