#C03333#C03333

#C03333 is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.8% C 0.178 H 25.5°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#C03333
RGB	rgb(192, 51, 51)
HSL	hsl(0, 58%, 48%)
HSV	hsv(0, 73%, 75%)
CMYK	cmyk(0%, 73.4%, 73.4%, 24.7%)
CIE-LAB	lab(43.97, 55.43, 33.94)
CIE-LCH	lch(43.97, 65.00, 31.48°)
OKLab	oklab(53.84% 0.1607 0.0767)
OKLCH	oklch(53.84% 0.178 25.5)
XYZ	xyz(23.5223, 13.8167, 4.5597)
Luminance	0.1381 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03333 #33C0C0

analogous

#C03379 #C03333 #C07933

triadic

#C03333 #33C033 #3333C0

tetradic

#C03333 #79C033 #33C0C0 #7933C0

square

#C03333 #79C033 #33C0C0 #7933C0

split-complementary

#C03333 #33C079 #3379C0

monochromatic

#5F1919 #902626 #C03333 #D45C5C #E18D8D

Accessibility & contrast

On white

5.58

#C03333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#C03333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03333

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03333	#FFFFFF	#000000	##FFFFFF
##C03333	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5431

Deuteranopia (green-blind)

#80732E

Tritanopia (blue-blind)

#D30035

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #c03333;
/* rgb */ color: rgb(192, 51, 51);
/* oklch */ color: oklch(53.8% 0.178 25.5);

Tailwind

colors: {
  custom: {
    50: '#dc756b',
    500: '#c03333',
    950: '#000000',
  },
}

SCSS

$custom: #c03333;
$custom-light: #dc756b;
$custom-dark: #000000;

JSON

{
  "hex": "#c03333",
  "rgb": {
    "r": 192,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 58.025,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53837,
    "c": 0.1781,
    "h": 25.5
  },
  "luminance": 0.13813
}

Semantic roles & 50–950 ramp

primary

#C03333

secondary

#84CBCB

accent

#E1E147

background

#FEF7F6

surface

#FDEDEB

border

#D5C8C6

text

#170906

muted

#857B7A

Preview Lab

Preview with #C03333

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

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