#428CA6#428CA6

#428CA6 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.4% C 0.083 H 223.8°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#428CA6
RGB	rgb(66, 140, 166)
HSL	hsl(196, 43%, 45%)
HSV	hsv(196, 60%, 65%)
CMYK	cmyk(60.2%, 15.7%, 0%, 34.9%)
CIE-LAB	lab(54.73, -15.06, -20.66)
CIE-LCH	lch(54.73, 25.57, 233.91°)
OKLab	oklab(60.36% -0.0599 -0.0575)
OKLCH	oklch(60.36% 0.083 223.8)
XYZ	xyz(18.5051, 22.6658, 39.4687)
Luminance	0.2267 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CA6 #A65C42

analogous

#42A68E #428CA6 #425AA6

triadic

#428CA6 #A6428C #8CA642

tetradic

#428CA6 #8E42A6 #A65C42 #5AA642

square

#428CA6 #8E42A6 #A65C42 #5AA642

split-complementary

#428CA6 #A6425A #A68E42

monochromatic

#1F424E #31677A #428CA6 #64A9C1 #90C1D3

Accessibility & contrast

On white

3.79

#428CA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#428CA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CA6

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CA6	#FFFFFF	#000000	##000000
##428CA6	1.00	3.79	5.53	5.53
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D89A7

Deuteranopia (green-blind)

#6F7EA6

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #428ca6;
/* rgb */ color: rgb(66, 140, 166);
/* oklch */ color: oklch(60.4% 0.083 223.8);

Tailwind

colors: {
  custom: {
    50: '#80adc0',
    500: '#428ca6',
    950: '#000000',
  },
}

SCSS

$custom: #428ca6;
$custom-light: #80adc0;
$custom-dark: #000000;

JSON

{
  "hex": "#428ca6",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 166
  },
  "hsl": {
    "h": 195.6,
    "s": 43.103,
    "l": 45.49
  },
  "oklch": {
    "l": 0.6036,
    "c": 0.08301,
    "h": 223.8
  },
  "luminance": 0.22668
}

Semantic roles & 50–950 ramp

primary

#428CA6

secondary

#BE9486

accent

#7655D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428CA6

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

Preview Lab → · Contrast checker → · Palette generator →