#CB4637#CB4637

#CB4637 is a mid, vivid red. Relative luminance 0.174; OKLCH L 57.8% C 0.171 H 29.7°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#CB4637
RGB	rgb(203, 70, 55)
HSL	hsl(6, 59%, 51%)
HSV	hsv(6, 73%, 80%)
CMYK	cmyk(0%, 65.5%, 72.9%, 20.4%)
CIE-LAB	lab(48.71, 51.84, 37.56)
CIE-LCH	lch(48.71, 64.02, 35.93°)
OKLab	oklab(57.76% 0.149 0.0848)
OKLCH	oklch(57.76% 0.171 29.7)
XYZ	xyz(27.5113, 17.3566, 5.5152)
Luminance	0.1735 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB4637 #37BCCB

analogous

#CB3772 #CB4637 #CB9037

triadic

#CB4637 #37CB46 #4637CB

tetradic

#CB4637 #72CB37 #37BCCB #9037CB

square

#CB4637 #72CB37 #37BCCB #9037CB

split-complementary

#CB4637 #37CB90 #3772CB

monochromatic

#6C241C #9C3429 #CB4637 #D87368 #E4A098

Accessibility & contrast

On white

4.70

#CB4637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#CB4637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB4637

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB4637	#FFFFFF	#000000	##FFFFFF
##CB4637	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B6134

Deuteranopia (green-blind)

#8C7E33

Tritanopia (blue-blind)

#DF2243

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #cb4637;
/* rgb */ color: rgb(203, 70, 55);
/* oklch */ color: oklch(57.8% 0.171 29.7);

Tailwind

colors: {
  custom: {
    50: '#e3806e',
    500: '#cb4637',
    950: '#000000',
  },
}

SCSS

$custom: #cb4637;
$custom-light: #e3806e;
$custom-dark: #000000;

JSON

{
  "hex": "#cb4637",
  "rgb": {
    "r": 203,
    "g": 70,
    "b": 55
  },
  "hsl": {
    "h": 6.081,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57764,
    "c": 0.17142,
    "h": 29.7
  },
  "luminance": 0.17353
}

Semantic roles & 50–950 ramp

primary

#CB4637

secondary

#8EC9D0

accent

#D2E246

background

#FFF8F6

surface

#FEEFEC

border

#D6CAC7

text

#170B07

muted

#857C7A

Preview Lab

Preview with #CB4637

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

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