#CB3D37#CB3D37

#CB3D37 is a mid, vivid red. Relative luminance 0.163; OKLCH L 56.8% C 0.180 H 27.0°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#CB3D37
RGB	rgb(203, 61, 55)
HSL	hsl(2, 59%, 51%)
HSV	hsv(2, 73%, 80%)
CMYK	cmyk(0%, 70%, 72.9%, 20.4%)
CIE-LAB	lab(47.38, 55.44, 36.07)
CIE-LCH	lch(47.38, 66.14, 33.05°)
OKLab	oklab(56.77% 0.1603 0.0816)
OKLCH	oklch(56.77% 0.18 27)
XYZ	xyz(26.9900, 16.3139, 5.3414)
Luminance	0.1631 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3D37 #37C5CB

analogous

#CB377B #CB3D37 #CB8737

triadic

#CB3D37 #37CB3D #3D37CB

tetradic

#CB3D37 #7BCB37 #37C5CB #8737CB

square

#CB3D37 #7BCB37 #37C5CB #8737CB

split-complementary

#CB3D37 #37CB87 #377BCB

monochromatic

#6C1F1C #9C2D29 #CB3D37 #D86C68 #E49B98

Accessibility & contrast

On white

4.93

#CB3D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#CB3D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3D37

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3D37	#FFFFFF	#000000	##FFFFFF
##CB3D37	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665D35

Deuteranopia (green-blind)

#897C32

Tritanopia (blue-blind)

#DF073D

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #cb3d37;
/* rgb */ color: rgb(203, 61, 55);
/* oklch */ color: oklch(56.8% 0.180 27.0);

Tailwind

colors: {
  custom: {
    50: '#e37b6e',
    500: '#cb3d37',
    950: '#000000',
  },
}

SCSS

$custom: #cb3d37;
$custom-light: #e37b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3d37",
  "rgb": {
    "r": 203,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 2.432,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.56773,
    "c": 0.17983,
    "h": 27
  },
  "luminance": 0.1631
}

Semantic roles & 50–950 ramp

primary

#CB3D37

secondary

#8ECDD0

accent

#DCE246

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3D37

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

Preview Lab → · Contrast checker → · Palette generator →