#CB3638#CB3638

#CB3638 is a mid, vivid red. Relative luminance 0.156; OKLCH L 56.1% C 0.186 H 24.9°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX#CB3638
RGBrgb(203, 54, 56)
HSLhsl(359, 59%, 50%)
HSVhsv(359, 73%, 80%)
CMYKcmyk(0%, 73.4%, 72.4%, 20.4%)
CIE-LABlab(46.48, 58.02, 34.46)
CIE-LCHlch(46.48, 67.48, 30.71°)
OKLaboklab(56.1% 0.1686 0.0783)
OKLCHoklch(56.1% 0.186 24.9)
XYZxyz(26.6646, 15.6244, 5.3524)
Luminance0.1562 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#CB3638 #36CBC9
analogous
#CB3682 #CB3638 #CB7F36
triadic
#CB3638 #38CB36 #3638CB
tetradic
#CB3638 #82CB36 #36CBC9 #7F36CB
square
#CB3638 #82CB36 #36CBC9 #7F36CB
split-complementary
#CB3638 #36CB7F #3682CB
monochromatic
#6B1C1D #9C282A #CB3638 #D86768 #E49798

Accessibility & contrast

On white

5.09
#CB3638 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.12
#CB3638 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3638
5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##CB3638#FFFFFF#000000##FFFFFF
##CB36381.005.094.125.09
#FFFFFF5.091.0021.001.00
#0000004.1221.001.0021.00
##FFFFFF5.091.0021.001.00

Color blindness preview

Protanopia (red-blind)
#625A36
Deuteranopia (green-blind)
#877A33
Tritanopia (blue-blind)
#DF0039
Achromatopsia (no color)
#6E6E6E

Design tokens & code

CSS
--color: #cb3638;
/* rgb */ color: rgb(203, 54, 56);
/* oklch */ color: oklch(56.1% 0.186 24.9);
Tailwind
colors: {
  custom: {
    50: '#e4786f',
    500: '#cb3638',
    950: '#000000',
  },
}
SCSS
$custom: #cb3638;
$custom-light: #e4786f;
$custom-dark: #000000;
JSON
{
  "hex": "#cb3638",
  "rgb": {
    "r": 203,
    "g": 54,
    "b": 56
  },
  "hsl": {
    "h": 359.195,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56101,
    "c": 0.18589,
    "h": 24.9
  },
  "luminance": 0.1562
}

Semantic roles & 50–950 ramp

primary
#CB3638
secondary
#8DD0CF
accent
#E2E046
background
#FFF7F6
surface
#FEEEEC
border
#D6C9C7
text
#170A07
muted
#857C7A

Preview Lab

Preview with #CB3638

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

Preview Lab → · Contrast checker → · Palette generator →

#CB3638 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva