#CB3636#CB3636

#CB3636 is a mid, vivid red. Relative luminance 0.156; OKLCH L 56.1% C 0.186 H 25.6°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#CB3636
RGB	rgb(203, 54, 54)
HSL	hsl(0, 59%, 50%)
HSV	hsv(0, 73%, 80%)
CMYK	cmyk(0%, 73.4%, 73.4%, 20.4%)
CIE-LAB	lab(46.45, 57.93, 35.58)
CIE-LCH	lch(46.45, 67.99, 31.56°)
OKLab	oklab(56.07% 0.1679 0.0803)
OKLCH	oklch(56.07% 0.186 25.6)
XYZ	xyz(26.6167, 15.6053, 5.0999)
Luminance	0.1560 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3636 #36CBCB

analogous

#CB3680 #CB3636 #CB8036

triadic

#CB3636 #36CB36 #3636CB

tetradic

#CB3636 #80CB36 #36CBCB #8036CB

square

#CB3636 #80CB36 #36CBCB #8036CB

split-complementary

#CB3636 #36CB80 #3680CB

monochromatic

#6B1C1C #9C2828 #CB3636 #D86767 #E49797

Accessibility & contrast

On white

5.10

#CB3636 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#CB3636 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3636

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3636	#FFFFFF	#000000	##FFFFFF
##CB3636	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625934

Deuteranopia (green-blind)

#877A31

Tritanopia (blue-blind)

#DF0038

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #cb3636;
/* rgb */ color: rgb(203, 54, 54);
/* oklch */ color: oklch(56.1% 0.186 25.6);

Tailwind

colors: {
  custom: {
    50: '#e4786d',
    500: '#cb3636',
    950: '#000000',
  },
}

SCSS

$custom: #cb3636;
$custom-light: #e4786d;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3636",
  "rgb": {
    "r": 203,
    "g": 54,
    "b": 54
  },
  "hsl": {
    "h": 0,
    "s": 58.893,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56074,
    "c": 0.18613,
    "h": 25.6
  },
  "luminance": 0.15601
}

Semantic roles & 50–950 ramp

primary

#CB3636

secondary

#8DD0D0

accent

#E2E246

background

#FFF7F6

surface

#FEEEEB

border

#D6C9C6

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3636

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

Preview Lab → · Contrast checker → · Palette generator →