#428AD1#428AD1

#428AD1 is a light, vivid cyan. Relative luminance 0.239; OKLCH L 62.0% C 0.130 H 250.4°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#428AD1
RGB	rgb(66, 138, 209)
HSL	hsl(210, 61%, 54%)
HSV	hsv(210, 68%, 82%)
CMYK	cmyk(68.4%, 34%, 0%, 18%)
CIE-LAB	lab(56.02, 0.40, -43.12)
CIE-LCH	lch(56.02, 43.12, 270.54°)
OKLab	oklab(62.01% -0.0435 -0.1223)
OKLCH	oklch(62.01% 0.13 250.4)
XYZ	xyz(22.8396, 23.9362, 63.7257)
Luminance	0.2394 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AD1 #D18942

analogous

#42D1D0 #428AD1 #4243D1

triadic

#428AD1 #D1428A #8AD142

tetradic

#428AD1 #D042D1 #D18942 #43D142

square

#428AD1 #D042D1 #D18942 #43D142

split-complementary

#428AD1 #D14243 #D1D042

monochromatic

#1E4D7B #2A6BAC #428AD1 #73A8DD #A4C7E9

Accessibility & contrast

On white

3.63

#428AD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#428AD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AD1

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AD1	#FFFFFF	#000000	##000000
##428AD1	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A8ED4

Deuteranopia (green-blind)

#5680D0

Tritanopia (blue-blind)

#009BA4

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428ad1;
/* rgb */ color: rgb(66, 138, 209);
/* oklch */ color: oklch(62.0% 0.130 250.4);

Tailwind

colors: {
  custom: {
    50: '#86abdf',
    500: '#428ad1',
    950: '#000000',
  },
}

SCSS

$custom: #428ad1;
$custom-light: #86abdf;
$custom-dark: #000000;

JSON

{
  "hex": "#428ad1",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 209
  },
  "hsl": {
    "h": 209.79,
    "s": 60.851,
    "l": 53.922
  },
  "oklch": {
    "l": 0.62009,
    "c": 0.1298,
    "h": 250.4
  },
  "luminance": 0.23939
}

Semantic roles & 50–950 ramp

primary

#428AD1

secondary

#D6B799

accent

#9344E4

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428AD1

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

Preview Lab → · Contrast checker → · Palette generator →