#428AAA#428AAA

#428AAA is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 60.1% C 0.087 H 229.6°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#428AAA
RGB	rgb(66, 138, 170)
HSL	hsl(198, 44%, 46%)
HSV	hsv(198, 61%, 67%)
CMYK	cmyk(61.2%, 18.8%, 0%, 33.3%)
CIE-LAB	lab(54.28, -12.69, -23.65)
CIE-LCH	lch(54.28, 26.84, 241.78°)
OKLab	oklab(60.05% -0.0561 -0.066)
OKLCH	oklch(60.05% 0.087 229.6)
XYZ	xyz(18.5881, 22.2357, 41.3347)
Luminance	0.2224 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AAA #AA6242

analogous

#42AA96 #428AAA #4256AA

triadic

#428AAA #AA428A #8AAA42

tetradic

#428AAA #9642AA #AA6242 #56AA42

square

#428AAA #9642AA #AA6242 #56AA42

split-complementary

#428AAA #AA4256 #AA9642

monochromatic

#204252 #31667E #428AAA #66A7C3 #92C0D5

Accessibility & contrast

On white

3.86

#428AAA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#428AAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AAA

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AAA	#FFFFFF	#000000	##000000
##428AAA	1.00	3.86	5.45	5.45
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A88AC

Deuteranopia (green-blind)

#6B7DAA

Tritanopia (blue-blind)

#009394

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #428aaa;
/* rgb */ color: rgb(66, 138, 170);
/* oklch */ color: oklch(60.1% 0.087 229.6);

Tailwind

colors: {
  custom: {
    50: '#80acc3',
    500: '#428aaa',
    950: '#000000',
  },
}

SCSS

$custom: #428aaa;
$custom-light: #80acc3;
$custom-dark: #000000;

JSON

{
  "hex": "#428aaa",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 170
  },
  "hsl": {
    "h": 198.462,
    "s": 44.068,
    "l": 46.275
  },
  "oklch": {
    "l": 0.60052,
    "c": 0.08662,
    "h": 229.6
  },
  "luminance": 0.22237
}

Semantic roles & 50–950 ramp

primary

#428AAA

secondary

#C09988

accent

#7B54D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428AAA

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

Preview Lab → · Contrast checker → · Palette generator →