#CB403A#CB403A

#CB403A is a mid, vivid red. Relative luminance 0.167; OKLCH L 57.1% C 0.177 H 26.8°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#CB403A
RGB	rgb(203, 64, 58)
HSL	hsl(2, 58%, 51%)
HSV	hsv(2, 71%, 80%)
CMYK	cmyk(0%, 68.5%, 71.4%, 20.4%)
CIE-LAB	lab(47.85, 54.41, 34.88)
CIE-LCH	lch(47.85, 64.64, 32.66°)
OKLab	oklab(57.13% 0.1577 0.0796)
OKLCH	oklch(57.13% 0.177 26.8)
XYZ	xyz(27.2287, 16.6728, 5.7866)
Luminance	0.1667 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#CB403A #3AC5CB

analogous

#CB3A7C #CB403A #CB883A

triadic

#CB403A #3ACB40 #403ACB

tetradic

#CB403A #7CCB3A #3AC5CB #883ACB

square

#CB403A #7CCB3A #3AC5CB #883ACB

split-complementary

#CB403A #3ACB88 #3A7CCB

monochromatic

#6E201D #9E2F2A #CB403A #D86F6A #E59E9B

Accessibility & contrast

On white

4.85

#CB403A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#CB403A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #CB403A

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##CB403A	#FFFFFF	#000000	##FFFFFF
##CB403A	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675E38

Deuteranopia (green-blind)

#8A7D35

Tritanopia (blue-blind)

#DF1440

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #cb403a;
/* rgb */ color: rgb(203, 64, 58);
/* oklch */ color: oklch(57.1% 0.177 26.8);

Tailwind

colors: {
  custom: {
    50: '#e37d70',
    500: '#cb403a',
    950: '#000000',
  },
}

SCSS

$custom: #cb403a;
$custom-light: #e37d70;
$custom-dark: #000000;

JSON

{
  "hex": "#cb403a",
  "rgb": {
    "r": 203,
    "g": 64,
    "b": 58
  },
  "hsl": {
    "h": 2.483,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.5713,
    "c": 0.17661,
    "h": 26.8
  },
  "luminance": 0.16669
}

Semantic roles & 50–950 ramp

primary

#CB403A

secondary

#90CED0

accent

#DBE146

background

#FFF8F6

surface

#FEEFEC

border

#D6CAC7

text

#170A07

muted

#857C7A

Preview Lab

Preview with #CB403A

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

Preview Lab → · Contrast checker → · Palette generator →