#428AB2#428AB2

#428AB2 is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.4% C 0.094 H 235.6°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#428AB2
RGB	rgb(66, 138, 178)
HSL	hsl(201, 46%, 48%)
HSV	hsv(201, 63%, 70%)
CMYK	cmyk(62.9%, 22.5%, 0%, 30.2%)
CIE-LAB	lab(54.60, -10.10, -27.73)
CIE-LCH	lch(54.60, 29.51, 250.00°)
OKLab	oklab(60.42% -0.0532 -0.0777)
OKLCH	oklch(60.42% 0.094 235.6)
XYZ	xyz(19.3680, 22.5476, 45.4423)
Luminance	0.2255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AB2 #B26A42

analogous

#42B2A2 #428AB2 #4252B2

triadic

#428AB2 #B2428A #8AB242

tetradic

#428AB2 #A242B2 #B26A42 #52B242

square

#428AB2 #A242B2 #B26A42 #52B242

split-complementary

#428AB2 #B24252 #B2A242

monochromatic

#214559 #316785 #428AB2 #6AA6C8 #96C1D8

Accessibility & contrast

On white

3.81

#428AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#428AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AB2

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AB2	#FFFFFF	#000000	##000000
##428AB2	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7789B4

Deuteranopia (green-blind)

#687EB1

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428ab2;
/* rgb */ color: rgb(66, 138, 178);
/* oklch */ color: oklch(60.4% 0.094 235.6);

Tailwind

colors: {
  custom: {
    50: '#81acc9',
    500: '#428ab2',
    950: '#000000',
  },
}

SCSS

$custom: #428ab2;
$custom-light: #81acc9;
$custom-dark: #000000;

JSON

{
  "hex": "#428ab2",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 178
  },
  "hsl": {
    "h": 201.429,
    "s": 45.902,
    "l": 47.843
  },
  "oklch": {
    "l": 0.60421,
    "c": 0.09415,
    "h": 235.6
  },
  "luminance": 0.2255
}

Semantic roles & 50–950 ramp

primary

#428AB2

secondary

#C4A08C

accent

#8152D6

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428AB2

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

Preview Lab → · Contrast checker → · Palette generator →