#428ED6#428ED6

#428ED6 is a light, vivid cyan. Relative luminance 0.254; OKLCH L 63.2% C 0.132 H 249.6°. Best body text is #000000 at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#428ED6
RGB	rgb(66, 142, 214)
HSL	hsl(209, 64%, 55%)
HSV	hsv(209, 69%, 84%)
CMYK	cmyk(69.2%, 33.6%, 0%, 16.1%)
CIE-LAB	lab(57.42, -0.21, -43.72)
CIE-LCH	lch(57.42, 43.72, 269.72°)
OKLab	oklab(63.19% -0.046 -0.124)
OKLCH	oklch(63.19% 0.132 249.6)
XYZ	xyz(24.0528, 25.3567, 67.2320)
Luminance	0.2536 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ED6 #D68A42

analogous

#42D6D4 #428ED6 #4244D6

triadic

#428ED6 #D6428E #8ED642

tetradic

#428ED6 #D442D6 #D68A42 #44D642

square

#428ED6 #D442D6 #D68A42 #44D642

split-complementary

#428ED6 #D64244 #D6D442

monochromatic

#1C5082 #276FB4 #428ED6 #74ACE1 #A7CAEC

Accessibility & contrast

On white

3.46

#428ED6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.07

#428ED6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ED6

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ED6	#FFFFFF	#000000	##000000
##428ED6	1.00	3.46	6.07	6.07
#FFFFFF	3.46	1.00	21.00	21.00
#000000	6.07	21.00	1.00	1.00
##000000	6.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E92D9

Deuteranopia (green-blind)

#5984D5

Tritanopia (blue-blind)

#009FA8

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #428ed6;
/* rgb */ color: rgb(66, 142, 214);
/* oklch */ color: oklch(63.2% 0.132 249.6);

Tailwind

colors: {
  custom: {
    50: '#87aee3',
    500: '#428ed6',
    950: '#000000',
  },
}

SCSS

$custom: #428ed6;
$custom-light: #87aee3;
$custom-dark: #000000;

JSON

{
  "hex": "#428ed6",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 214
  },
  "hsl": {
    "h": 209.189,
    "s": 64.348,
    "l": 54.902
  },
  "oklch": {
    "l": 0.63187,
    "c": 0.13228,
    "h": 249.6
  },
  "luminance": 0.25359
}

Semantic roles & 50–950 ramp

primary

#428ED6

secondary

#D9B99B

accent

#9240E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0D1015

muted

#7D7F83

Preview Lab

Preview with #428ED6

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

Preview Lab → · Contrast checker → · Palette generator →