#428EA6#428EA6

#428EA6 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.8% C 0.083 H 221.5°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#428EA6
RGB	rgb(66, 142, 166)
HSL	hsl(194, 43%, 45%)
HSV	hsv(194, 60%, 65%)
CMYK	cmyk(60.2%, 14.5%, 0%, 34.9%)
CIE-LAB	lab(55.33, -16.15, -19.73)
CIE-LCH	lch(55.33, 25.50, 230.69°)
OKLab	oklab(60.85% -0.0621 -0.0549)
OKLCH	oklch(60.85% 0.083 221.5)
XYZ	xyz(18.8000, 23.2556, 39.5670)
Luminance	0.2326 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EA6 #A65A42

analogous

#42A68C #428EA6 #425CA6

triadic

#428EA6 #A6428E #8EA642

tetradic

#428EA6 #8C42A6 #A65A42 #5CA642

square

#428EA6 #8C42A6 #A65A42 #5CA642

split-complementary

#428EA6 #A6425C #A68C42

monochromatic

#1F434E #31697A #428EA6 #64ABC1 #90C3D3

Accessibility & contrast

On white

3.72

#428EA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#428EA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EA6

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EA6	#FFFFFF	#000000	##000000
##428EA6	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808BA7

Deuteranopia (green-blind)

#7180A6

Tritanopia (blue-blind)

#009696

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #428ea6;
/* rgb */ color: rgb(66, 142, 166);
/* oklch */ color: oklch(60.8% 0.083 221.5);

Tailwind

colors: {
  custom: {
    50: '#80afc0',
    500: '#428ea6',
    950: '#000000',
  },
}

SCSS

$custom: #428ea6;
$custom-light: #80afc0;
$custom-dark: #000000;

JSON

{
  "hex": "#428ea6",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 166
  },
  "hsl": {
    "h": 194.4,
    "s": 43.103,
    "l": 45.49
  },
  "oklch": {
    "l": 0.60846,
    "c": 0.08287,
    "h": 221.5
  },
  "luminance": 0.23257
}

Semantic roles & 50–950 ramp

primary

#428EA6

secondary

#BE9386

accent

#7355D3

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #428EA6

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

Preview Lab → · Contrast checker → · Palette generator →