#C63A3A#C63A3A

#C63A3A is a mid, vivid red. Relative luminance 0.153; OKLCH L 55.7% C 0.177 H 25.0°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#C63A3A
RGB	rgb(198, 58, 58)
HSL	hsl(0, 55%, 50%)
HSV	hsv(0, 71%, 78%)
CMYK	cmyk(0%, 70.7%, 70.7%, 22.4%)
CIE-LAB	lab(46.10, 55.10, 32.61)
CIE-LCH	lch(46.10, 64.03, 30.62°)
OKLab	oklab(55.66% 0.1605 0.0749)
OKLCH	oklch(55.66% 0.177 25)
XYZ	xyz(25.5683, 15.3412, 5.6170)
Luminance	0.1534 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#C63A3A #3AC6C6

analogous

#C63A80 #C63A3A #C6803A

triadic

#C63A3A #3AC63A #3A3AC6

tetradic

#C63A3A #80C63A #3AC6C6 #803AC6

square

#C63A3A #80C63A #3AC6C6 #803AC6

split-complementary

#C63A3A #3AC680 #3A80C6

monochromatic

#681E1E #972C2C #C63A3A #D46969 #E19999

Accessibility & contrast

On white

5.16

#C63A3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#C63A3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #C63A3A

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##C63A3A	#FFFFFF	#000000	##FFFFFF
##C63A3A	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)

#625A39

Deuteranopia (green-blind)

#857835

Tritanopia (blue-blind)

#DA043C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #c63a3a;
/* rgb */ color: rgb(198, 58, 58);
/* oklch */ color: oklch(55.7% 0.177 25.0);

Tailwind

colors: {
  custom: {
    50: '#df7970',
    500: '#c63a3a',
    950: '#000000',
  },
}

SCSS

$custom: #c63a3a;
$custom-light: #df7970;
$custom-dark: #000000;

JSON

{
  "hex": "#c63a3a",
  "rgb": {
    "r": 198,
    "g": 58,
    "b": 58
  },
  "hsl": {
    "h": 0,
    "s": 55.118,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55658,
    "c": 0.17705,
    "h": 25
  },
  "luminance": 0.15337
}

Semantic roles & 50–950 ramp

primary

#C63A3A

secondary

#8FCDCD

accent

#DEDE49

background

#FEF7F6

surface

#FDEEEC

border

#D5C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #C63A3A

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

Preview Lab → · Contrast checker → · Palette generator →