#CB3B39#CB3B39

#CB3B39 is a mid, vivid red. Relative luminance 0.161; OKLCH L 56.6% C 0.181 H 25.8°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#CB3B39
RGB	rgb(203, 59, 57)
HSL	hsl(1, 58%, 51%)
HSV	hsv(1, 72%, 80%)
CMYK	cmyk(0%, 70.9%, 71.9%, 20.4%)
CIE-LAB	lab(47.14, 56.28, 34.64)
CIE-LCH	lch(47.14, 66.08, 31.61°)
OKLab	oklab(56.6% 0.1633 0.0789)
OKLCH	oklch(56.6% 0.181 25.8)
XYZ	xyz(26.9341, 16.1239, 5.5641)
Luminance	0.1612 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3B39 #39C9CB

analogous

#CB3980 #CB3B39 #CB8439

triadic

#CB3B39 #39CB3B #3B39CB

tetradic

#CB3B39 #80CB39 #39C9CB #8439CB

square

#CB3B39 #80CB39 #39C9CB #8439CB

split-complementary

#CB3B39 #39CB84 #3980CB

monochromatic

#6D1E1D #9D2B29 #CB3B39 #D86B69 #E49B9A

Accessibility & contrast

On white

4.97

#CB3B39 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#CB3B39 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3B39

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3B39	#FFFFFF	#000000	##FFFFFF
##CB3B39	1.00	4.97	4.22	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#645C37

Deuteranopia (green-blind)

#887B34

Tritanopia (blue-blind)

#DF003C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #cb3b39;
/* rgb */ color: rgb(203, 59, 57);
/* oklch */ color: oklch(56.6% 0.181 25.8);

Tailwind

colors: {
  custom: {
    50: '#e37b70',
    500: '#cb3b39',
    950: '#000000',
  },
}

SCSS

$custom: #cb3b39;
$custom-light: #e37b70;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3b39",
  "rgb": {
    "r": 203,
    "g": 59,
    "b": 57
  },
  "hsl": {
    "h": 0.822,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.56597,
    "c": 0.18137,
    "h": 25.8
  },
  "luminance": 0.1612
}

Semantic roles & 50–950 ramp

primary

#CB3B39

secondary

#90CFD0

accent

#DFE246

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3B39

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

Preview Lab → · Contrast checker → · Palette generator →