#428DAC#428DAC

#428DAC is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.9% C 0.088 H 227.9°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#428DAC
RGB	rgb(66, 141, 172)
HSL	hsl(198, 45%, 47%)
HSV	hsv(198, 62%, 67%)
CMYK	cmyk(61.6%, 18%, 0%, 32.5%)
CIE-LAB	lab(55.26, -13.71, -23.28)
CIE-LCH	lch(55.26, 27.02, 239.50°)
OKLab	oklab(60.86% -0.0587 -0.0649)
OKLCH	oklch(60.86% 0.088 227.9)
XYZ	xyz(19.2151, 23.1847, 42.4842)
Luminance	0.2319 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DAC #AC6142

analogous

#42AC96 #428DAC #4258AC

triadic

#428DAC #AC428D #8DAC42

tetradic

#428DAC #9642AC #AC6142 #58AC42

square

#428DAC #9642AC #AC6142 #58AC42

split-complementary

#428DAC #AC4258 #AC9642

monochromatic

#204454 #316980 #428DAC #67A9C5 #93C2D6

Accessibility & contrast

On white

3.73

#428DAC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#428DAC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DAC

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DAC	#FFFFFF	#000000	##000000
##428DAC	1.00	3.73	5.64	5.64
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8BAE

Deuteranopia (green-blind)

#6E7FAC

Tritanopia (blue-blind)

#009697

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428dac;
/* rgb */ color: rgb(66, 141, 172);
/* oklch */ color: oklch(60.9% 0.088 227.9);

Tailwind

colors: {
  custom: {
    50: '#81aec4',
    500: '#428dac',
    950: '#000000',
  },
}

SCSS

$custom: #428dac;
$custom-light: #81aec4;
$custom-dark: #000000;

JSON

{
  "hex": "#428dac",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 172
  },
  "hsl": {
    "h": 197.547,
    "s": 44.538,
    "l": 46.667
  },
  "oklch": {
    "l": 0.60864,
    "c": 0.08753,
    "h": 227.9
  },
  "luminance": 0.23187
}

Semantic roles & 50–950 ramp

primary

#428DAC

secondary

#C19989

accent

#7954D4

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428DAC

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

Preview Lab → · Contrast checker → · Palette generator →