#CB4437#CB4437

#CB4437 is a mid, vivid red. Relative luminance 0.171; OKLCH L 57.5% C 0.173 H 29.0°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#CB4437
RGB	rgb(203, 68, 55)
HSL	hsl(5, 59%, 51%)
HSV	hsv(5, 73%, 80%)
CMYK	cmyk(0%, 66.5%, 72.9%, 20.4%)
CIE-LAB	lab(48.40, 52.67, 37.22)
CIE-LCH	lch(48.40, 64.49, 35.25°)
OKLab	oklab(57.53% 0.1516 0.0841)
OKLCH	oklch(57.53% 0.173 29)
XYZ	xyz(27.3883, 17.1106, 5.4742)
Luminance	0.1711 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB4437 #37BECB

analogous

#CB3774 #CB4437 #CB8E37

triadic

#CB4437 #37CB44 #4437CB

tetradic

#CB4437 #74CB37 #37BECB #8E37CB

square

#CB4437 #74CB37 #37BECB #8E37CB

split-complementary

#CB4437 #37CB8E #3774CB

monochromatic

#6C231C #9C3329 #CB4437 #D87168 #E49F98

Accessibility & contrast

On white

4.75

#CB4437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#CB4437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB4437

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB4437	#FFFFFF	#000000	##FFFFFF
##CB4437	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6035

Deuteranopia (green-blind)

#8C7E32

Tritanopia (blue-blind)

#DF1D42

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #cb4437;
/* rgb */ color: rgb(203, 68, 55);
/* oklch */ color: oklch(57.5% 0.173 29.0);

Tailwind

colors: {
  custom: {
    50: '#e37f6e',
    500: '#cb4437',
    950: '#000000',
  },
}

SCSS

$custom: #cb4437;
$custom-light: #e37f6e;
$custom-dark: #000000;

JSON

{
  "hex": "#cb4437",
  "rgb": {
    "r": 203,
    "g": 68,
    "b": 55
  },
  "hsl": {
    "h": 5.27,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57533,
    "c": 0.17332,
    "h": 29
  },
  "luminance": 0.17107
}

Semantic roles & 50–950 ramp

primary

#CB4437

secondary

#8ECAD0

accent

#D4E246

background

#FFF8F6

surface

#FEEFEC

border

#D6CAC7

text

#170B07

muted

#857C7A

Preview Lab

Preview with #CB4437

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

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