#C03B31#C03B31

#C03B31 is a mid, vivid red. Relative luminance 0.146; OKLCH L 54.6% C 0.171 H 28.4°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#C03B31
RGB	rgb(192, 59, 49)
HSL	hsl(4, 59%, 47%)
HSV	hsv(4, 74%, 75%)
CMYK	cmyk(0%, 69.3%, 74.5%, 24.7%)
CIE-LAB	lab(45.03, 52.37, 36.28)
CIE-LCH	lch(45.03, 63.71, 34.71°)
OKLab	oklab(54.62% 0.1507 0.0813)
OKLCH	oklch(54.62% 0.171 28.4)
XYZ	xyz(23.8592, 14.5597, 4.4591)
Luminance	0.1456 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C03B31 #31B6C0

analogous

#C0316E #C03B31 #C08331

triadic

#C03B31 #31C03B #3B31C0

tetradic

#C03B31 #6EC031 #31B6C0 #8331C0

square

#C03B31 #6EC031 #31B6C0 #8331C0

split-complementary

#C03B31 #31C083 #316EC0

monochromatic

#5E1D18 #8F2C25 #C03B31 #D56259 #E1908A

Accessibility & contrast

On white

5.37

#C03B31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#C03B31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C03B31

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C03B31	#FFFFFF	#000000	##FFFFFF
##C03B31	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#61582F

Deuteranopia (green-blind)

#82752C

Tritanopia (blue-blind)

#D30D3A

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #c03b31;
/* rgb */ color: rgb(192, 59, 49);
/* oklch */ color: oklch(54.6% 0.171 28.4);

Tailwind

colors: {
  custom: {
    50: '#db796a',
    500: '#c03b31',
    950: '#000000',
  },
}

SCSS

$custom: #c03b31;
$custom-light: #db796a;
$custom-dark: #000000;

JSON

{
  "hex": "#c03b31",
  "rgb": {
    "r": 192,
    "g": 59,
    "b": 49
  },
  "hsl": {
    "h": 4.196,
    "s": 59.336,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54618,
    "c": 0.17123,
    "h": 28.4
  },
  "luminance": 0.14556
}

Semantic roles & 50–950 ramp

primary

#C03B31

secondary

#82C6CB

accent

#D8E345

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#170A06

muted

#857C7A

Preview Lab

Preview with #C03B31

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

Preview Lab → · Contrast checker → · Palette generator →