#428CE2#428CE2

#428CE2 is a light, vivid cyan. Relative luminance 0.254; OKLCH L 63.4% C 0.149 H 254.0°. Best body text is #000000 at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#428CE2
RGB	rgb(66, 140, 226)
HSL	hsl(212, 73%, 57%)
HSV	hsv(212, 71%, 89%)
CMYK	cmyk(70.8%, 38.1%, 0%, 11.4%)
CIE-LAB	lab(57.47, 5.17, -50.36)
CIE-LCH	lch(57.47, 50.62, 275.87°)
OKLab	oklab(63.42% -0.0411 -0.1435)
OKLCH	oklch(63.42% 0.149 254)
XYZ	xyz(25.3472, 25.4026, 75.5041)
Luminance	0.2540 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CE2 #E29842

analogous

#42DCE2 #428CE2 #4842E2

triadic

#428CE2 #E2428C #8CE242

tetradic

#428CE2 #E242DC #E29842 #42E248

square

#428CE2 #E242DC #E29842 #42E248

split-complementary

#428CE2 #E24842 #DCE242

monochromatic

#175093 #1F6DC8 #428CE2 #77ACEA #ACCDF2

Accessibility & contrast

On white

3.45

#428CE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.08

#428CE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CE2

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CE2	#FFFFFF	#000000	##000000
##428CE2	1.00	3.45	6.08	6.08
#FFFFFF	3.45	1.00	21.00	21.00
#000000	6.08	21.00	1.00	1.00
##000000	6.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6492E5

Deuteranopia (green-blind)

#4C83E0

Tritanopia (blue-blind)

#00A0AC

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #428ce2;
/* rgb */ color: rgb(66, 140, 226);
/* oklch */ color: oklch(63.4% 0.149 254.0);

Tailwind

colors: {
  custom: {
    50: '#89adeb',
    500: '#428ce2',
    950: '#000000',
  },
}

SCSS

$custom: #428ce2;
$custom-light: #89adeb;
$custom-dark: #000000;

JSON

{
  "hex": "#428ce2",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 226
  },
  "hsl": {
    "h": 212.25,
    "s": 73.394,
    "l": 57.255
  },
  "oklch": {
    "l": 0.63422,
    "c": 0.14923,
    "h": 254
  },
  "luminance": 0.25405
}

Semantic roles & 50–950 ramp

primary

#428CE2

secondary

#E0C29F

accent

#9B38F0

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428CE2

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

Preview Lab → · Contrast checker → · Palette generator →