#CA3738#CA3738

#CA3738 is a mid, vivid red. Relative luminance 0.156; OKLCH L 56.0% C 0.184 H 25.1°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#CA3738
RGB	rgb(202, 55, 56)
HSL	hsl(360, 58%, 50%)
HSV	hsv(360, 73%, 79%)
CMYK	cmyk(0%, 72.8%, 72.3%, 20.8%)
CIE-LAB	lab(46.42, 57.36, 34.34)
CIE-LCH	lch(46.42, 66.85, 30.91°)
OKLab	oklab(56.02% 0.1667 0.078)
OKLCH	oklch(56.02% 0.184 25.1)
XYZ	xyz(26.4401, 15.5785, 5.3554)
Luminance	0.1557 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CA3738 #37CAC9

analogous

#CA3781 #CA3738 #CA7F37

triadic

#CA3738 #38CA37 #3738CA

tetradic

#CA3738 #81CA37 #37CAC9 #7F37CA

square

#CA3738 #81CA37 #37CAC9 #7F37CA

split-complementary

#CA3738 #37CA7F #3781CA

monochromatic

#6A1C1D #9B292A #CA3738 #D76768 #E49898

Accessibility & contrast

On white

5.10

#CA3738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#CA3738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CA3738

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CA3738	#FFFFFF	#000000	##FFFFFF
##CA3738	1.00	5.10	4.11	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625A36

Deuteranopia (green-blind)

#877A33

Tritanopia (blue-blind)

#DE0039

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #ca3738;
/* rgb */ color: rgb(202, 55, 56);
/* oklch */ color: oklch(56.0% 0.184 25.1);

Tailwind

colors: {
  custom: {
    50: '#e3786f',
    500: '#ca3738',
    950: '#000000',
  },
}

SCSS

$custom: #ca3738;
$custom-light: #e3786f;
$custom-dark: #000000;

JSON

{
  "hex": "#ca3738",
  "rgb": {
    "r": 202,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.592,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56022,
    "c": 0.18404,
    "h": 25.1
  },
  "luminance": 0.15574
}

Semantic roles & 50–950 ramp

primary

#CA3738

secondary

#8ECFCF

accent

#E1E046

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CA3738

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

Preview Lab → · Contrast checker → · Palette generator →