#428DC5#428DC5

#428DC5 is a light, moderate cyan. Relative luminance 0.242; OKLCH L 62.1% C 0.113 H 243.7°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#428DC5
RGB	rgb(66, 141, 197)
HSL	hsl(206, 53%, 52%)
HSV	hsv(206, 66%, 77%)
CMYK	cmyk(66.5%, 28.4%, 0%, 22.7%)
CIE-LAB	lab(56.32, -5.47, -35.87)
CIE-LCH	lch(56.32, 36.28, 261.34°)
OKLab	oklab(62.06% -0.05 -0.1012)
OKLCH	oklch(62.06% 0.113 243.7)
XYZ	xyz(21.8459, 24.2369, 56.3394)
Luminance	0.2424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DC5 #C57A42

analogous

#42C5BC #428DC5 #424CC5

triadic

#428DC5 #C5428D #8DC542

tetradic

#428DC5 #BC42C5 #C57A42 #4CC542

square

#428DC5 #BC42C5 #C57A42 #4CC542

split-complementary

#428DC5 #C5424C #C5BC42

monochromatic

#214C6C #2F6D9A #428DC5 #71A9D3 #A0C5E2

Accessibility & contrast

On white

3.59

#428DC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.85

#428DC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DC5

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DC5	#FFFFFF	#000000	##000000
##428DC5	1.00	3.59	5.85	5.85
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.85	21.00	1.00	1.00
##000000	5.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748EC7

Deuteranopia (green-blind)

#6281C4

Tritanopia (blue-blind)

#009BA1

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428dc5;
/* rgb */ color: rgb(66, 141, 197);
/* oklch */ color: oklch(62.1% 0.113 243.7);

Tailwind

colors: {
  custom: {
    50: '#84aed7',
    500: '#428dc5',
    950: '#000000',
  },
}

SCSS

$custom: #428dc5;
$custom-light: #84aed7;
$custom-dark: #000000;

JSON

{
  "hex": "#428dc5",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 197
  },
  "hsl": {
    "h": 205.649,
    "s": 53.036,
    "l": 51.569
  },
  "oklch": {
    "l": 0.62058,
    "c": 0.11285,
    "h": 243.7
  },
  "luminance": 0.24239
}

Semantic roles & 50–950 ramp

primary

#428DC5

secondary

#CEAD95

accent

#894BDC

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428DC5

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

Preview Lab → · Contrast checker → · Palette generator →