#428AA4#428AA4

#428AA4 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.8% C 0.082 H 224.4°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#428AA4
RGB	rgb(66, 138, 164)
HSL	hsl(196, 43%, 45%)
HSV	hsv(196, 60%, 64%)
CMYK	cmyk(59.8%, 15.9%, 0%, 35.7%)
CIE-LAB	lab(54.04, -14.59, -20.56)
CIE-LCH	lch(54.04, 25.21, 234.63°)
OKLab	oklab(59.79% -0.0584 -0.0572)
OKLCH	oklch(59.79% 0.082 224.4)
XYZ	xyz(18.0335, 22.0138, 38.4135)
Luminance	0.2202 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AA4 #A45C42

analogous

#42A48D #428AA4 #4259A4

triadic

#428AA4 #A4428A #8AA442

tetradic

#428AA4 #8D42A4 #A45C42 #59A442

square

#428AA4 #8D42A4 #A45C42 #59A442

split-complementary

#428AA4 #A44259 #A48D42

monochromatic

#1F414D #306578 #428AA4 #63A7C0 #8FC0D2

Accessibility & contrast

On white

3.89

#428AA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#428AA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AA4

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AA4	#FFFFFF	#000000	##000000
##428AA4	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B87A5

Deuteranopia (green-blind)

#6D7DA4

Tritanopia (blue-blind)

#009292

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #428aa4;
/* rgb */ color: rgb(66, 138, 164);
/* oklch */ color: oklch(59.8% 0.082 224.4);

Tailwind

colors: {
  custom: {
    50: '#80acbf',
    500: '#428aa4',
    950: '#000000',
  },
}

SCSS

$custom: #428aa4;
$custom-light: #80acbf;
$custom-dark: #000000;

JSON

{
  "hex": "#428aa4",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 164
  },
  "hsl": {
    "h": 195.918,
    "s": 42.609,
    "l": 45.098
  },
  "oklch": {
    "l": 0.59788,
    "c": 0.08176,
    "h": 224.4
  },
  "luminance": 0.22016
}

Semantic roles & 50–950 ramp

primary

#428AA4

secondary

#BD9485

accent

#7755D2

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428AA4

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

Preview Lab → · Contrast checker → · Palette generator →