#C43333#C43333

#C43333 is a mid, vivid red. Relative luminance 0.143; OKLCH L 54.5% C 0.182 H 25.6°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#C43333
RGB	rgb(196, 51, 51)
HSL	hsl(0, 59%, 48%)
HSV	hsv(0, 74%, 77%)
CMYK	cmyk(0%, 74%, 74%, 23.1%)
CIE-LAB	lab(44.73, 56.67, 35.00)
CIE-LCH	lch(44.73, 66.61, 31.70°)
OKLab	oklab(54.54% 0.1642 0.0788)
OKLCH	oklch(54.54% 0.182 25.6)
XYZ	xyz(24.5491, 14.3462, 4.6078)
Luminance	0.1434 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C43333 #33C4C4

analogous

#C4337B #C43333 #C47B33

triadic

#C43333 #33C433 #3333C4

tetradic

#C43333 #7BC433 #33C4C4 #7B33C4

square

#C43333 #7BC433 #33C4C4 #7B33C4

split-complementary

#C43333 #33C47B #337BC4

monochromatic

#631A1A #932626 #C43333 #D55F5F #E28F8F

Accessibility & contrast

On white

5.43

#C43333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#C43333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C43333

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C43333	#FFFFFF	#000000	##FFFFFF
##C43333	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5631

Deuteranopia (green-blind)

#82752E

Tritanopia (blue-blind)

#D80035

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #c43333;
/* rgb */ color: rgb(196, 51, 51);
/* oklch */ color: oklch(54.5% 0.182 25.6);

Tailwind

colors: {
  custom: {
    50: '#df766b',
    500: '#c43333',
    950: '#000000',
  },
}

SCSS

$custom: #c43333;
$custom-light: #df766b;
$custom-dark: #000000;

JSON

{
  "hex": "#c43333",
  "rgb": {
    "r": 196,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 58.704,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54537,
    "c": 0.1821,
    "h": 25.6
  },
  "luminance": 0.14342
}

Semantic roles & 50–950 ramp

primary

#C43333

secondary

#86CDCD

accent

#E2E246

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#170906

muted

#857B7A

Preview Lab

Preview with #C43333

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

Preview Lab → · Contrast checker → · Palette generator →