#428EC8#428EC8

#428EC8 is a light, moderate cyan. Relative luminance 0.247; OKLCH L 62.4% C 0.116 H 244.3°. Best body text is #000000 at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#428EC8
RGB	rgb(66, 142, 200)
HSL	hsl(206, 55%, 52%)
HSV	hsv(206, 67%, 78%)
CMYK	cmyk(67%, 29%, 0%, 21.6%)
CIE-LAB	lab(56.75, -5.02, -36.89)
CIE-LCH	lch(56.75, 37.23, 262.25°)
OKLab	oklab(62.44% -0.0501 -0.1041)
OKLCH	oklch(62.44% 0.116 244.3)
XYZ	xyz(22.3411, 24.6720, 58.2172)
Luminance	0.2467 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EC8 #C87C42

analogous

#42C8BF #428EC8 #424BC8

triadic

#428EC8 #C8428E #8EC842

tetradic

#428EC8 #BF42C8 #C87C42 #4BC842

square

#428EC8 #BF42C8 #C87C42 #4BC842

split-complementary

#428EC8 #C8424B #C8BF42

monochromatic

#204D6F #2E6E9F #428EC8 #71AAD6 #A1C7E4

Accessibility & contrast

On white

3.54

#428EC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.93

#428EC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EC8

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EC8	#FFFFFF	#000000	##000000
##428EC8	1.00	3.54	5.93	5.93
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.93	21.00	1.00	1.00
##000000	5.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748FCB

Deuteranopia (green-blind)

#6282C7

Tritanopia (blue-blind)

#009CA2

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428ec8;
/* rgb */ color: rgb(66, 142, 200);
/* oklch */ color: oklch(62.4% 0.116 244.3);

Tailwind

colors: {
  custom: {
    50: '#84aed9',
    500: '#428ec8',
    950: '#000000',
  },
}

SCSS

$custom: #428ec8;
$custom-light: #84aed9;
$custom-dark: #000000;

JSON

{
  "hex": "#428ec8",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 200
  },
  "hsl": {
    "h": 205.97,
    "s": 54.918,
    "l": 52.157
  },
  "oklch": {
    "l": 0.62443,
    "c": 0.11555,
    "h": 244.3
  },
  "luminance": 0.24674
}

Semantic roles & 50–950 ramp

primary

#428EC8

secondary

#D0AF96

accent

#8A4ADE

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428EC8

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

Preview Lab → · Contrast checker → · Palette generator →