#CB3F38#CB3F38

#CB3F38 is a mid, vivid red. Relative luminance 0.165; OKLCH L 57.0% C 0.178 H 27.2°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#CB3F38
RGB	rgb(203, 63, 56)
HSL	hsl(3, 59%, 51%)
HSV	hsv(3, 72%, 80%)
CMYK	cmyk(0%, 69%, 72.4%, 20.4%)
CIE-LAB	lab(47.68, 54.71, 35.83)
CIE-LCH	lch(47.68, 65.40, 33.22°)
OKLab	oklab(57% 0.1582 0.0813)
OKLCH	oklch(57% 0.178 27.2)
XYZ	xyz(27.1229, 16.5411, 5.5052)
Luminance	0.1654 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB3F38 #38C4CB

analogous

#CB387A #CB3F38 #CB8838

triadic

#CB3F38 #38CB3F #3F38CB

tetradic

#CB3F38 #7ACB38 #38C4CB #8838CB

square

#CB3F38 #7ACB38 #38C4CB #8838CB

split-complementary

#CB3F38 #38CB88 #387ACB

monochromatic

#6C201C #9D2E29 #CB3F38 #D86E69 #E49D99

Accessibility & contrast

On white

4.88

#CB3F38 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#CB3F38 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB3F38

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB3F38	#FFFFFF	#000000	##FFFFFF
##CB3F38	1.00	4.88	4.31	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675E36

Deuteranopia (green-blind)

#8A7C33

Tritanopia (blue-blind)

#DF103F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb3f38;
/* rgb */ color: rgb(203, 63, 56);
/* oklch */ color: oklch(57.0% 0.178 27.2);

Tailwind

colors: {
  custom: {
    50: '#e37c6f',
    500: '#cb3f38',
    950: '#000000',
  },
}

SCSS

$custom: #cb3f38;
$custom-light: #e37c6f;
$custom-dark: #000000;

JSON

{
  "hex": "#cb3f38",
  "rgb": {
    "r": 203,
    "g": 63,
    "b": 56
  },
  "hsl": {
    "h": 2.857,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56996,
    "c": 0.17785,
    "h": 27.2
  },
  "luminance": 0.16537
}

Semantic roles & 50–950 ramp

primary

#CB3F38

secondary

#8FCDD0

accent

#DAE246

background

#FFF7F6

surface

#FEEEEC

border

#D6C9C7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB3F38

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

Preview Lab → · Contrast checker → · Palette generator →