#D33F3F#D33F3F

#D33F3F is a mid, vivid red. Relative luminance 0.178; OKLCH L 58.4% C 0.185 H 25.0°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#D33F3F
RGB	rgb(211, 63, 63)
HSL	hsl(0, 63%, 54%)
HSV	hsv(0, 70%, 83%)
CMYK	cmyk(0%, 70.1%, 70.1%, 17.3%)
CIE-LAB	lab(49.21, 57.60, 33.97)
CIE-LCH	lch(49.21, 66.87, 30.53°)
OKLab	oklab(58.44% 0.1678 0.0781)
OKLCH	oklch(58.44% 0.185 25)
XYZ	xyz(29.5419, 17.7672, 6.5755)
Luminance	0.1776 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#D33F3F #3FD3D3

analogous

#D33F89 #D33F3F #D3893F

triadic

#D33F3F #3FD33F #3F3FD3

tetradic

#D33F3F #89D33F #3FD3D3 #893FD3

square

#D33F3F #89D33F #3FD3D3 #893FD3

split-complementary

#D33F3F #3FD389 #3F89D3

monochromatic

#7B1C1C #AD2828 #D33F3F #DE7171 #EAA3A3

Accessibility & contrast

On white

4.61

#D33F3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#D33F3F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #D33F3F

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##D33F3F	#FFFFFF	#000000	##FFFFFF
##D33F3F	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69613D

Deuteranopia (green-blind)

#8E813A

Tritanopia (blue-blind)

#E80841

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #d33f3f;
/* rgb */ color: rgb(211, 63, 63);
/* oklch */ color: oklch(58.4% 0.185 25.0);

Tailwind

colors: {
  custom: {
    50: '#e97e74',
    500: '#d33f3f',
    950: '#000000',
  },
}

SCSS

$custom: #d33f3f;
$custom-light: #e97e74;
$custom-dark: #000000;

JSON

{
  "hex": "#d33f3f",
  "rgb": {
    "r": 211,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 0,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58439,
    "c": 0.18508,
    "h": 25
  },
  "luminance": 0.17763
}

Semantic roles & 50–950 ramp

primary

#D33F3F

secondary

#97D7D7

accent

#E6E642

background

#FFF8F7

surface

#FFEFED

border

#D7CAC8

text

#180B08

muted

#867C7B

Preview Lab

Preview with #D33F3F

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

Preview Lab → · Contrast checker → · Palette generator →