#CB3838#CB3838

#CB3838 is a mid, vivid red. Relative luminance 0.158; OKLCH L 56.3% C 0.184 H 25.4°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#CB3838
RGB	rgb(203, 56, 56)
HSL	hsl(0, 59%, 51%)
HSV	hsv(0, 72%, 80%)
CMYK	cmyk(0%, 72.4%, 72.4%, 20.4%)
CIE-LAB	lab(46.73, 57.32, 34.75)
CIE-LCH	lch(46.73, 67.03, 31.22°)
OKLab	oklab(56.29% 0.1664 0.0789)
OKLCH	oklch(56.29% 0.184 25.4)
XYZ	xyz(26.7596, 15.8144, 5.3841)
Luminance	0.1581 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3838 #38CBCB

analogous

#CB3881 #CB3838 #CB8138

triadic

#CB3838 #38CB38 #3838CB

tetradic

#CB3838 #81CB38 #38CBCB #8138CB

square

#CB3838 #81CB38 #38CBCB #8138CB

split-complementary

#CB3838 #38CB81 #3881CB

monochromatic

#6C1C1C #9D2929 #CB3838 #D86969 #E49999

Accessibility & contrast

On white

5.05

#CB3838 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#CB3838 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3838

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3838	#FFFFFF	#000000	##FFFFFF
##CB3838	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635A36

Deuteranopia (green-blind)

#887A33

Tritanopia (blue-blind)

#DF003A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #cb3838;
/* rgb */ color: rgb(203, 56, 56);
/* oklch */ color: oklch(56.3% 0.184 25.4);

Tailwind

colors: {
  custom: {
    50: '#e3796f',
    500: '#cb3838',
    950: '#000000',
  },
}

SCSS

$custom: #cb3838;
$custom-light: #e3796f;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3838",
  "rgb": {
    "r": 203,
    "g": 56,
    "b": 56
  },
  "hsl": {
    "h": 0,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56289,
    "c": 0.18416,
    "h": 25.4
  },
  "luminance": 0.1581
}

Semantic roles & 50–950 ramp

primary

#CB3838

secondary

#8FD0D0

accent

#E2E246

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3838

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

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