#CB4137#CB4137

#CB4137 is a mid, vivid red. Relative luminance 0.168; OKLCH L 57.2% C 0.176 H 28.1°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#CB4137
RGB	rgb(203, 65, 55)
HSL	hsl(4, 59%, 51%)
HSV	hsv(4, 73%, 80%)
CMYK	cmyk(0%, 68%, 72.9%, 20.4%)
CIE-LAB	lab(47.95, 53.88, 36.71)
CIE-LCH	lch(47.95, 65.20, 34.27°)
OKLab	oklab(57.2% 0.1554 0.083)
OKLCH	oklch(57.2% 0.176 28.1)
XYZ	xyz(27.2115, 16.7569, 5.4153)
Luminance	0.1675 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB4137 #37C1CB

analogous

#CB3777 #CB4137 #CB8B37

triadic

#CB4137 #37CB41 #4137CB

tetradic

#CB4137 #77CB37 #37C1CB #8B37CB

square

#CB4137 #77CB37 #37C1CB #8B37CB

split-complementary

#CB4137 #37CB8B #3777CB

monochromatic

#6C211C #9C3029 #CB4137 #D86F68 #E49D98

Accessibility & contrast

On white

4.83

#CB4137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#CB4137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB4137

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB4137	#FFFFFF	#000000	##FFFFFF
##CB4137	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#685F35

Deuteranopia (green-blind)

#8A7D32

Tritanopia (blue-blind)

#DF1640

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #cb4137;
/* rgb */ color: rgb(203, 65, 55);
/* oklch */ color: oklch(57.2% 0.176 28.1);

Tailwind

colors: {
  custom: {
    50: '#e37d6e',
    500: '#cb4137',
    950: '#000000',
  },
}

SCSS

$custom: #cb4137;
$custom-light: #e37d6e;
$custom-dark: #000000;

JSON

{
  "hex": "#cb4137",
  "rgb": {
    "r": 203,
    "g": 65,
    "b": 55
  },
  "hsl": {
    "h": 4.054,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57199,
    "c": 0.17614,
    "h": 28.1
  },
  "luminance": 0.16753
}

Semantic roles & 50–950 ramp

primary

#CB4137

secondary

#8ECBD0

accent

#D7E246

background

#FFF8F6

surface

#FEEFEC

border

#D6CAC7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB4137

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

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