#D33B3B#D33B3B

#D33B3B is a mid, vivid red. Relative luminance 0.173; OKLCH L 58.0% C 0.189 H 25.3°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#D33B3B
RGB	rgb(211, 59, 59)
HSL	hsl(0, 63%, 53%)
HSV	hsv(0, 72%, 83%)
CMYK	cmyk(0%, 72%, 72%, 17.3%)
CIE-LAB	lab(48.63, 58.87, 35.59)
CIE-LCH	lch(48.63, 68.80, 31.16°)
OKLab	oklab(57.99% 0.171 0.0809)
OKLCH	oklch(57.99% 0.189 25.3)
XYZ	xyz(29.2206, 17.2970, 5.9369)
Luminance	0.1729 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D33B3B #3BD3D3

analogous

#D33B87 #D33B3B #D3873B

triadic

#D33B3B #3BD33B #3B3BD3

tetradic

#D33B3B #87D33B #3BD3D3 #873BD3

square

#D33B3B #87D33B #3BD3D3 #873BD3

split-complementary

#D33B3B #3BD387 #3B87D3

monochromatic

#791B1B #AB2626 #D33B3B #DE6D6D #E99F9F

Accessibility & contrast

On white

4.71

#D33B3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#D33B3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #D33B3B

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D33B3B	#FFFFFF	#000000	##FFFFFF
##D33B3B	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675F39

Deuteranopia (green-blind)

#8D7F36

Tritanopia (blue-blind)

#E8003D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #d33b3b;
/* rgb */ color: rgb(211, 59, 59);
/* oklch */ color: oklch(58.0% 0.189 25.3);

Tailwind

colors: {
  custom: {
    50: '#e97c71',
    500: '#d33b3b',
    950: '#000000',
  },
}

SCSS

$custom: #d33b3b;
$custom-light: #e97c71;
$custom-dark: #000000;

JSON

{
  "hex": "#d33b3b",
  "rgb": {
    "r": 211,
    "g": 59,
    "b": 59
  },
  "hsl": {
    "h": 0,
    "s": 63.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.57989,
    "c": 0.18916,
    "h": 25.3
  },
  "luminance": 0.17293
}

Semantic roles & 50–950 ramp

primary

#D33B3B

secondary

#94D6D6

accent

#E6E641

background

#FFF7F6

surface

#FFEEEC

border

#D7C9C7

text

#180A07

muted

#867C7A

Preview Lab

Preview with #D33B3B

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

Preview Lab → · Contrast checker → · Palette generator →