#428BDA#428BDA

#428BDA is a light, vivid cyan. Relative luminance 0.247; OKLCH L 62.7% C 0.140 H 252.5°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#428BDA
RGB	rgb(66, 139, 218)
HSL	hsl(211, 67%, 56%)
HSV	hsv(211, 70%, 85%)
CMYK	cmyk(69.7%, 36.2%, 0%, 14.5%)
CIE-LAB	lab(56.77, 2.95, -47.00)
CIE-LCH	lch(56.77, 47.09, 273.60°)
OKLab	oklab(62.74% -0.0421 -0.1336)
OKLCH	oklch(62.74% 0.14 252.5)
XYZ	xyz(24.1296, 24.6829, 69.8087)
Luminance	0.2469 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BDA #DA9142

analogous

#42D7DA #428BDA #4542DA

triadic

#428BDA #DA428B #8BDA42

tetradic

#428BDA #DA42D7 #DA9142 #42DA45

square

#428BDA #DA42D7 #DA9142 #42DA45

split-complementary

#428BDA #DA4542 #D7DA42

monochromatic

#1A4F87 #246CBA #428BDA #75AAE4 #A8CAEE

Accessibility & contrast

On white

3.54

#428BDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#428BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BDA

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BDA	#FFFFFF	#000000	##000000
##428BDA	1.00	3.54	5.94	5.94
#FFFFFF	3.54	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)

#6790DD

Deuteranopia (green-blind)

#5182D8

Tritanopia (blue-blind)

#009DA8

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428bda;
/* rgb */ color: rgb(66, 139, 218);
/* oklch */ color: oklch(62.7% 0.140 252.5);

Tailwind

colors: {
  custom: {
    50: '#87ace6',
    500: '#428bda',
    950: '#000000',
  },
}

SCSS

$custom: #428bda;
$custom-light: #87ace6;
$custom-dark: #000000;

JSON

{
  "hex": "#428bda",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 218
  },
  "hsl": {
    "h": 211.184,
    "s": 67.257,
    "l": 55.686
  },
  "oklch": {
    "l": 0.62738,
    "c": 0.14011,
    "h": 252.5
  },
  "luminance": 0.24685
}

Semantic roles & 50–950 ramp

primary

#428BDA

secondary

#DBBD9C

accent

#973EEA

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428BDA

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

Preview Lab → · Contrast checker → · Palette generator →