#428DCE#428DCE

#428DCE is a light, vivid cyan. Relative luminance 0.247; OKLCH L 62.5% C 0.123 H 247.5°. Best body text is #000000 at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#428DCE
RGB	rgb(66, 141, 206)
HSL	hsl(208, 59%, 53%)
HSV	hsv(208, 68%, 81%)
CMYK	cmyk(68%, 31.6%, 0%, 19.2%)
CIE-LAB	lab(56.74, -2.39, -40.29)
CIE-LCH	lch(56.74, 40.36, 266.60°)
OKLab	oklab(62.53% -0.0473 -0.114)
OKLCH	oklch(62.53% 0.123 247.5)
XYZ	xyz(22.9080, 24.6618, 61.9335)
Luminance	0.2466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DCE #CE8342

analogous

#42CEC9 #428DCE #4247CE

triadic

#428DCE #CE428D #8DCE42

tetradic

#428DCE #C942CE #CE8342 #47CE42

square

#428DCE #C942CE #CE8342 #47CE42

split-complementary

#428DCE #CE4247 #CEC942

monochromatic

#1F4E77 #2B6EA7 #428DCE #73AADB #A3C8E7

Accessibility & contrast

On white

3.54

#428DCE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.93

#428DCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DCE

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DCE	#FFFFFF	#000000	##000000
##428DCE	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)

#7090D1

Deuteranopia (green-blind)

#5D82CD

Tritanopia (blue-blind)

#009CA4

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428dce;
/* rgb */ color: rgb(66, 141, 206);
/* oklch */ color: oklch(62.5% 0.123 247.5);

Tailwind

colors: {
  custom: {
    50: '#85aedd',
    500: '#428dce',
    950: '#000000',
  },
}

SCSS

$custom: #428dce;
$custom-light: #85aedd;
$custom-dark: #000000;

JSON

{
  "hex": "#428dce",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 206
  },
  "hsl": {
    "h": 207.857,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.62527,
    "c": 0.12344,
    "h": 247.5
  },
  "luminance": 0.24664
}

Semantic roles & 50–950 ramp

primary

#428DCE

secondary

#D4B498

accent

#8E46E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428DCE

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

Preview Lab → · Contrast checker → · Palette generator →