#428ED2#428ED2

#428ED2 is a light, vivid cyan. Relative luminance 0.252; OKLCH L 63.0% C 0.127 H 248.3°. Best body text is #000000 at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#428ED2
RGB	rgb(66, 142, 210)
HSL	hsl(208, 62%, 54%)
HSV	hsv(208, 69%, 82%)
CMYK	cmyk(68.6%, 32.4%, 0%, 17.6%)
CIE-LAB	lab(57.23, -1.60, -41.78)
CIE-LCH	lch(57.23, 41.81, 267.81°)
OKLab	oklab(62.97% -0.0471 -0.1184)
OKLCH	oklch(62.97% 0.127 248.3)
XYZ	xyz(23.5483, 25.1549, 64.5746)
Luminance	0.2516 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428ED2 #D28642

analogous

#42D2CE #428ED2 #4246D2

triadic

#428ED2 #D2428E #8ED242

tetradic

#428ED2 #CE42D2 #D28642 #46D242

square

#428ED2 #CE42D2 #D28642 #46D242

split-complementary

#428ED2 #D24246 #D2CE42

monochromatic

#1E4F7C #296FAD #428ED2 #73ACDE #A5C9EA

Accessibility & contrast

On white

3.48

#428ED2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.03

#428ED2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428ED2

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428ED2	#FFFFFF	#000000	##000000
##428ED2	1.00	3.48	6.03	6.03
#FFFFFF	3.48	1.00	21.00	21.00
#000000	6.03	21.00	1.00	1.00
##000000	6.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7091D5

Deuteranopia (green-blind)

#5C83D1

Tritanopia (blue-blind)

#009EA6

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #428ed2;
/* rgb */ color: rgb(66, 142, 210);
/* oklch */ color: oklch(63.0% 0.127 248.3);

Tailwind

colors: {
  custom: {
    50: '#86aee0',
    500: '#428ed2',
    950: '#000000',
  },
}

SCSS

$custom: #428ed2;
$custom-light: #86aee0;
$custom-dark: #000000;

JSON

{
  "hex": "#428ed2",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 210
  },
  "hsl": {
    "h": 208.333,
    "s": 61.538,
    "l": 54.118
  },
  "oklch": {
    "l": 0.62969,
    "c": 0.12739,
    "h": 248.3
  },
  "luminance": 0.25157
}

Semantic roles & 50–950 ramp

primary

#428ED2

secondary

#D7B699

accent

#8F43E5

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428ED2

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

Preview Lab → · Contrast checker → · Palette generator →