#C63B30#C63B30

#C63B30 is a mid, vivid red. Relative luminance 0.153; OKLCH L 55.6% C 0.178 H 28.7°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#C63B30
RGB	rgb(198, 59, 48)
HSL	hsl(4, 61%, 48%)
HSV	hsv(4, 76%, 78%)
CMYK	cmyk(0%, 70.2%, 75.8%, 22.4%)
CIE-LAB	lab(46.11, 54.29, 38.34)
CIE-LCH	lch(46.11, 66.47, 35.23°)
OKLab	oklab(55.63% 0.1558 0.0852)
OKLCH	oklch(55.63% 0.178 28.7)
XYZ	xyz(25.3891, 15.3509, 4.4219)
Luminance	0.1535 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63B30 #30BBC6

analogous

#C63070 #C63B30 #C68630

triadic

#C63B30 #30C63B #3B30C6

tetradic

#C63B30 #70C630 #30BBC6 #8630C6

square

#C63B30 #70C630 #30BBC6 #8630C6

split-complementary

#C63B30 #30C686 #3070C6

monochromatic

#631E18 #952C24 #C63B30 #D7655C #E3938D

Accessibility & contrast

On white

5.16

#C63B30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#C63B30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63B30

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63B30	#FFFFFF	#000000	##FFFFFF
##C63B30	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635A2E

Deuteranopia (green-blind)

#86782B

Tritanopia (blue-blind)

#DA033A

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #c63b30;
/* rgb */ color: rgb(198, 59, 48);
/* oklch */ color: oklch(55.6% 0.178 28.7);

Tailwind

colors: {
  custom: {
    50: '#e07a69',
    500: '#c63b30',
    950: '#000000',
  },
}

SCSS

$custom: #c63b30;
$custom-light: #e07a69;
$custom-dark: #000000;

JSON

{
  "hex": "#c63b30",
  "rgb": {
    "r": 198,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 4.4,
    "s": 60.976,
    "l": 48.235
  },
  "oklch": {
    "l": 0.55628,
    "c": 0.17757,
    "h": 28.7
  },
  "luminance": 0.15347
}

Semantic roles & 50–950 ramp

primary

#C63B30

secondary

#84C8CE

accent

#D8E444

background

#FFF7F6

surface

#FEEEEB

border

#D6C9C6

text

#170A06

muted

#857C7A

Preview Lab

Preview with #C63B30

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

Preview Lab → · Contrast checker → · Palette generator →