#CB403B#CB403B

#CB403B is a mid, vivid red. Relative luminance 0.167; OKLCH L 57.1% C 0.176 H 26.4°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#CB403B
RGB	rgb(203, 64, 59)
HSL	hsl(2, 58%, 51%)
HSV	hsv(2, 71%, 80%)
CMYK	cmyk(0%, 68.5%, 70.9%, 20.4%)
CIE-LAB	lab(47.86, 54.46, 34.32)
CIE-LCH	lch(47.86, 64.38, 32.22°)
OKLab	oklab(57.14% 0.158 0.0786)
OKLCH	oklch(57.14% 0.176 26.4)
XYZ	xyz(27.2544, 16.6831, 5.9219)
Luminance	0.1668 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB403B #3BC6CB

analogous

#CB3B7E #CB403B #CB883B

triadic

#CB403B #3BCB40 #403BCB

tetradic

#CB403B #7ECB3B #3BC6CB #883BCB

square

#CB403B #7ECB3B #3BC6CB #883BCB

split-complementary

#CB403B #3BCB88 #3B7ECB

monochromatic

#6E201D #9F2E2A #CB403B #D86F6B #E59E9C

Accessibility & contrast

On white

4.84

#CB403B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#CB403B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB403B

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB403B	#FFFFFF	#000000	##FFFFFF
##CB403B	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675E39

Deuteranopia (green-blind)

#8A7D36

Tritanopia (blue-blind)

#DF1540

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #cb403b;
/* rgb */ color: rgb(203, 64, 59);
/* oklch */ color: oklch(57.1% 0.176 26.4);

Tailwind

colors: {
  custom: {
    50: '#e37d71',
    500: '#cb403b',
    950: '#000000',
  },
}

SCSS

$custom: #cb403b;
$custom-light: #e37d71;
$custom-dark: #000000;

JSON

{
  "hex": "#cb403b",
  "rgb": {
    "r": 203,
    "g": 64,
    "b": 59
  },
  "hsl": {
    "h": 2.083,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57144,
    "c": 0.17647,
    "h": 26.4
  },
  "luminance": 0.16679
}

Semantic roles & 50–950 ramp

primary

#CB403B

secondary

#91CED1

accent

#DCE147

background

#FFF8F6

surface

#FEEFEC

border

#D6CAC7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB403B

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

Preview Lab → · Contrast checker → · Palette generator →