#CA3837#CA3837

#CA3837 is a mid, vivid red. Relative luminance 0.157; OKLCH L 56.1% C 0.183 H 25.7°. Best body text is #FFFFFF at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#CA3837
RGB	rgb(202, 56, 55)
HSL	hsl(0, 58%, 50%)
HSV	hsv(0, 73%, 79%)
CMYK	cmyk(0%, 72.3%, 72.8%, 20.8%)
CIE-LAB	lab(46.53, 56.96, 35.05)
CIE-LCH	lch(46.53, 66.88, 31.60°)
OKLab	oklab(56.1% 0.1652 0.0794)
OKLCH	oklch(56.1% 0.183 25.7)
XYZ	xyz(26.4639, 15.6648, 5.2438)
Luminance	0.1566 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CA3837 #37C9CA

analogous

#CA377F #CA3837 #CA8137

triadic

#CA3837 #37CA38 #3837CA

tetradic

#CA3837 #7FCA37 #37C9CA #8137CA

square

#CA3837 #7FCA37 #37C9CA #8137CA

split-complementary

#CA3837 #37CA81 #377FCA

monochromatic

#6A1D1C #9B2A29 #CA3837 #D76867 #E49898

Accessibility & contrast

On white

5.08

#CA3837 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#CA3837 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CA3837

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CA3837	#FFFFFF	#000000	##FFFFFF
##CA3837	1.00	5.08	4.13	5.08
#FFFFFF	5.08	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635A35

Deuteranopia (green-blind)

#877A32

Tritanopia (blue-blind)

#DE003A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #ca3837;
/* rgb */ color: rgb(202, 56, 55);
/* oklch */ color: oklch(56.1% 0.183 25.7);

Tailwind

colors: {
  custom: {
    50: '#e3796e',
    500: '#ca3837',
    950: '#000000',
  },
}

SCSS

$custom: #ca3837;
$custom-light: #e3796e;
$custom-dark: #000000;

JSON

{
  "hex": "#ca3837",
  "rgb": {
    "r": 202,
    "g": 56,
    "b": 55
  },
  "hsl": {
    "h": 0.408,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56103,
    "c": 0.18329,
    "h": 25.7
  },
  "luminance": 0.15661
}

Semantic roles & 50–950 ramp

primary

#CA3837

secondary

#8ECFCF

accent

#E0E146

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CA3837

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

Preview Lab → · Contrast checker → · Palette generator →