#CA3638#CA3638

#CA3638 is a mid, vivid red. Relative luminance 0.155; OKLCH L 55.9% C 0.185 H 24.9°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#CA3638
RGB	rgb(202, 54, 56)
HSL	hsl(359, 58%, 50%)
HSV	hsv(359, 73%, 79%)
CMYK	cmyk(0%, 73.3%, 72.3%, 20.8%)
CIE-LAB	lab(46.29, 57.71, 34.19)
CIE-LCH	lch(46.29, 67.08, 30.65°)
OKLab	oklab(55.93% 0.1678 0.0777)
OKLCH	oklch(55.93% 0.185 24.9)
XYZ	xyz(26.3931, 15.4844, 5.3397)
Luminance	0.1548 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CA3638 #36CAC8

analogous

#CA3682 #CA3638 #CA7E36

triadic

#CA3638 #38CA36 #3638CA

tetradic

#CA3638 #82CA36 #36CAC8 #7E36CA

square

#CA3638 #82CA36 #36CAC8 #7E36CA

split-complementary

#CA3638 #36CA7E #3682CA

monochromatic

#6A1C1D #9A292A #CA3638 #D76668 #E49798

Accessibility & contrast

On white

5.13

#CA3638 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#CA3638 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CA3638

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CA3638	#FFFFFF	#000000	##FFFFFF
##CA3638	1.00	5.13	4.10	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615936

Deuteranopia (green-blind)

#867933

Tritanopia (blue-blind)

#DE0039

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #ca3638;
/* rgb */ color: rgb(202, 54, 56);
/* oklch */ color: oklch(55.9% 0.185 24.9);

Tailwind

colors: {
  custom: {
    50: '#e3786f',
    500: '#ca3638',
    950: '#000000',
  },
}

SCSS

$custom: #ca3638;
$custom-light: #e3786f;
$custom-dark: #000000;

JSON

{
  "hex": "#ca3638",
  "rgb": {
    "r": 202,
    "g": 54,
    "b": 56
  },
  "hsl": {
    "h": 359.189,
    "s": 58.268,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55928,
    "c": 0.1849,
    "h": 24.9
  },
  "luminance": 0.1548
}

Semantic roles & 50–950 ramp

primary

#CA3638

secondary

#8DCFCE

accent

#E1DF46

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CA3638

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

Preview Lab → · Contrast checker → · Palette generator →