#D33737#D33737

#D33737 is a mid, vivid red. Relative luminance 0.169; OKLCH L 57.6% C 0.193 H 25.7°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#D33737
RGB	rgb(211, 55, 55)
HSL	hsl(0, 64%, 52%)
HSV	hsv(0, 74%, 83%)
CMYK	cmyk(0%, 73.9%, 73.9%, 17.3%)
CIE-LAB	lab(48.09, 60.08, 37.26)
CIE-LCH	lch(48.09, 70.70, 31.81°)
OKLab	oklab(57.57% 0.174 0.0837)
OKLCH	oklch(57.57% 0.193 25.7)
XYZ	xyz(28.9231, 16.8616, 5.3454)
Luminance	0.1686 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D33737 #37D3D3

analogous

#D33785 #D33737 #D38537

triadic

#D33737 #37D337 #3737D3

tetradic

#D33737 #85D337 #37D3D3 #8537D3

square

#D33737 #85D337 #37D3D3 #8537D3

split-complementary

#D33737 #37D385 #3785D3

monochromatic

#761A1A #A82525 #D33737 #DE6969 #E99B9B

Accessibility & contrast

On white

4.80

#D33737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#D33737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #D33737

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D33737	#FFFFFF	#000000	##FFFFFF
##D33737	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665D35

Deuteranopia (green-blind)

#8C7E31

Tritanopia (blue-blind)

#E80039

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #d33737;
/* rgb */ color: rgb(211, 55, 55);
/* oklch */ color: oklch(57.6% 0.193 25.7);

Tailwind

colors: {
  custom: {
    50: '#ea7a6e',
    500: '#d33737',
    950: '#000000',
  },
}

SCSS

$custom: #d33737;
$custom-light: #ea7a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#d33737",
  "rgb": {
    "r": 211,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.57565,
    "c": 0.19304,
    "h": 25.7
  },
  "luminance": 0.16857
}

Semantic roles & 50–950 ramp

primary

#D33737

secondary

#91D5D5

accent

#E7E741

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#180A07

muted

#867C7A

Preview Lab

Preview with #D33737

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

Preview Lab → · Contrast checker → · Palette generator →