#428CAE#428CAE

#428CAE is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.7% C 0.090 H 230.6°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#428CAE
RGB	rgb(66, 140, 174)
HSL	hsl(199, 45%, 47%)
HSV	hsv(199, 62%, 68%)
CMYK	cmyk(62.1%, 19.5%, 0%, 31.8%)
CIE-LAB	lab(55.04, -12.52, -24.77)
CIE-LCH	lch(55.04, 27.75, 243.19°)
OKLab	oklab(60.71% -0.0568 -0.0692)
OKLCH	oklch(60.71% 0.09 230.6)
XYZ	xyz(19.2619, 22.9685, 43.4544)
Luminance	0.2297 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CAE #AE6442

analogous

#42AE9A #428CAE #4256AE

triadic

#428CAE #AE428C #8CAE42

tetradic

#428CAE #9A42AE #AE6442 #56AE42

square

#428CAE #9A42AE #AE6442 #56AE42

split-complementary

#428CAE #AE4256 #AE9A42

monochromatic

#204555 #316882 #428CAE #68A8C6 #94C2D6

Accessibility & contrast

On white

3.75

#428CAE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#428CAE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CAE

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CAE	#FFFFFF	#000000	##000000
##428CAE	1.00	3.75	5.59	5.59
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8AB0

Deuteranopia (green-blind)

#6C7FAE

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428cae;
/* rgb */ color: rgb(66, 140, 174);
/* oklch */ color: oklch(60.7% 0.090 230.6);

Tailwind

colors: {
  custom: {
    50: '#81adc6',
    500: '#428cae',
    950: '#000000',
  },
}

SCSS

$custom: #428cae;
$custom-light: #81adc6;
$custom-dark: #000000;

JSON

{
  "hex": "#428cae",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 174
  },
  "hsl": {
    "h": 198.889,
    "s": 45,
    "l": 47.059
  },
  "oklch": {
    "l": 0.60714,
    "c": 0.08953,
    "h": 230.6
  },
  "luminance": 0.2297
}

Semantic roles & 50–950 ramp

primary

#428CAE

secondary

#C29C8A

accent

#7C53D5

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428CAE

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

Preview Lab → · Contrast checker → · Palette generator →