#CB3E3F#CB3E3F

#CB3E3F is a mid, vivid red. Relative luminance 0.165; OKLCH L 57.0% C 0.178 H 24.4°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#CB3E3F
RGB	rgb(203, 62, 63)
HSL	hsl(360, 58%, 52%)
HSV	hsv(360, 69%, 80%)
CMYK	cmyk(0%, 69.5%, 69%, 20.4%)
CIE-LAB	lab(47.63, 55.44, 31.73)
CIE-LCH	lch(47.63, 63.87, 29.79°)
OKLab	oklab(56.99% 0.1619 0.0735)
OKLCH	oklch(56.99% 0.178 24.4)
XYZ	xyz(27.2514, 16.5046, 6.4524)
Luminance	0.1650 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3E3F #3ECBCA

analogous

#CB3E86 #CB3E3F #CB833E

triadic

#CB3E3F #3FCB3E #3E3FCB

tetradic

#CB3E3F #86CB3E #3ECBCA #833ECB

square

#CB3E3F #86CB3E #3ECBCA #833ECB

split-complementary

#CB3E3F #3ECB83 #3E86CB

monochromatic

#701E1F #A12B2C #CB3E3F #D86E6F #E59E9F

Accessibility & contrast

On white

4.88

#CB3E3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#CB3E3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3E3F

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3E3F	#FFFFFF	#000000	##FFFFFF
##CB3E3F	1.00	4.88	4.30	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655E3E

Deuteranopia (green-blind)

#897C3B

Tritanopia (blue-blind)

#DF1040

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3e3f;
/* rgb */ color: rgb(203, 62, 63);
/* oklch */ color: oklch(57.0% 0.178 24.4);

Tailwind

colors: {
  custom: {
    50: '#e37c74',
    500: '#cb3e3f',
    950: '#000000',
  },
}

SCSS

$custom: #cb3e3f;
$custom-light: #e37c74;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3e3f",
  "rgb": {
    "r": 203,
    "g": 62,
    "b": 63
  },
  "hsl": {
    "h": 359.574,
    "s": 57.551,
    "l": 51.961
  },
  "oklch": {
    "l": 0.56991,
    "c": 0.17784,
    "h": 24.4
  },
  "luminance": 0.16501
}

Semantic roles & 50–950 ramp

primary

#CB3E3F

secondary

#94D1D1

accent

#E1E047

background

#FFF7F7

surface

#FEEEED

border

#D6C9C8

text

#170A08

muted

#857C7B

Preview Lab

Preview with #CB3E3F

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

Preview Lab → · Contrast checker → · Palette generator →