#428CD5#428CD5

#428CD5 is a light, vivid cyan. Relative luminance 0.247; OKLCH L 62.7% C 0.133 H 250.5°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#428CD5
RGB	rgb(66, 140, 213)
HSL	hsl(210, 64%, 55%)
HSV	hsv(210, 69%, 84%)
CMYK	cmyk(69%, 34.3%, 0%, 16.5%)
CIE-LAB	lab(56.80, 0.62, -44.14)
CIE-LCH	lch(56.80, 44.15, 270.80°)
OKLab	oklab(62.68% -0.0443 -0.1253)
OKLCH	oklch(62.68% 0.133 250.5)
XYZ	xyz(23.6306, 24.7160, 66.4632)
Luminance	0.2472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CD5 #D58B42

analogous

#42D5D4 #428CD5 #4243D5

triadic

#428CD5 #D5428C #8CD542

tetradic

#428CD5 #D442D5 #D58B42 #43D542

square

#428CD5 #D442D5 #D58B42 #43D542

split-complementary

#428CD5 #D54243 #D5D442

monochromatic

#1C4F80 #286DB2 #428CD5 #74AAE0 #A6C9EB

Accessibility & contrast

On white

3.53

#428CD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#428CD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CD5

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CD5	#FFFFFF	#000000	##000000
##428CD5	1.00	3.53	5.94	5.94
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.94	21.00	1.00	1.00
##000000	5.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B90D8

Deuteranopia (green-blind)

#5682D4

Tritanopia (blue-blind)

#009DA6

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428cd5;
/* rgb */ color: rgb(66, 140, 213);
/* oklch */ color: oklch(62.7% 0.133 250.5);

Tailwind

colors: {
  custom: {
    50: '#86ade2',
    500: '#428cd5',
    950: '#000000',
  },
}

SCSS

$custom: #428cd5;
$custom-light: #86ade2;
$custom-dark: #000000;

JSON

{
  "hex": "#428cd5",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 213
  },
  "hsl": {
    "h": 209.796,
    "s": 63.636,
    "l": 54.706
  },
  "oklch": {
    "l": 0.62681,
    "c": 0.1329,
    "h": 250.5
  },
  "luminance": 0.24719
}

Semantic roles & 50–950 ramp

primary

#428CD5

secondary

#D8B99A

accent

#9341E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #428CD5

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

Preview Lab → · Contrast checker → · Palette generator →