#D33F37#D33F37

#D33F37 is a mid, vivid red. Relative luminance 0.177; OKLCH L 58.3% C 0.186 H 27.6°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#D33F37
RGB	rgb(211, 63, 55)
HSL	hsl(3, 64%, 52%)
HSV	hsv(3, 74%, 83%)
CMYK	cmyk(0%, 70.1%, 73.9%, 17.3%)
CIE-LAB	lab(49.11, 57.25, 38.41)
CIE-LCH	lch(49.11, 68.94, 33.86°)
OKLab	oklab(58.33% 0.165 0.0862)
OKLCH	oklch(58.33% 0.186 27.6)
XYZ	xyz(29.3344, 17.6841, 5.4825)
Luminance	0.1768 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D33F37 #37CBD3

analogous

#D3377D #D33F37 #D38D37

triadic

#D33F37 #37D33F #3F37D3

tetradic

#D33F37 #7DD337 #37CBD3 #8D37D3

square

#D33F37 #7DD337 #37CBD3 #8D37D3

split-complementary

#D33F37 #37D38D #377DD3

monochromatic

#761F1A #A82C25 #D33F37 #DE6F69 #E99F9B

Accessibility & contrast

On white

4.63

#D33F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#D33F37 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #D33F37

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D33F37	#FFFFFF	#000000	##FFFFFF
##D33F37	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6035

Deuteranopia (green-blind)

#8F8032

Tritanopia (blue-blind)

#E8033F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #d33f37;
/* rgb */ color: rgb(211, 63, 55);
/* oklch */ color: oklch(58.3% 0.186 27.6);

Tailwind

colors: {
  custom: {
    50: '#e97d6e',
    500: '#d33f37',
    950: '#000000',
  },
}

SCSS

$custom: #d33f37;
$custom-light: #e97d6e;
$custom-dark: #000000;

JSON

{
  "hex": "#d33f37",
  "rgb": {
    "r": 211,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 3.077,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.5833,
    "c": 0.18617,
    "h": 27.6
  },
  "luminance": 0.1768
}

Semantic roles & 50–950 ramp

primary

#D33F37

secondary

#91D1D5

accent

#DEE741

background

#FFF8F6

surface

#FFEFEC

border

#D7CAC7

text

#180A07

muted

#867C7A

Preview Lab

Preview with #D33F37

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

Preview Lab → · Contrast checker → · Palette generator →