#428EB6#428EB6

#428EB6 is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.6% C 0.096 H 234.3°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#428EB6
RGB	rgb(66, 142, 182)
HSL	hsl(201, 47%, 49%)
HSV	hsv(201, 64%, 71%)
CMYK	cmyk(63.7%, 22%, 0%, 28.6%)
CIE-LAB	lab(55.97, -11.03, -27.90)
CIE-LCH	lch(55.97, 30.01, 248.43°)
OKLab	oklab(61.56% -0.0561 -0.0782)
OKLCH	oklch(61.56% 0.096 234.3)
XYZ	xyz(20.3600, 23.8796, 47.7831)
Luminance	0.2388 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EB6 #B66A42

analogous

#42B6A4 #428EB6 #4254B6

triadic

#428EB6 #B6428E #8EB642

tetradic

#428EB6 #A442B6 #B66A42 #54B642

square

#428EB6 #A442B6 #B66A42 #54B642

split-complementary

#428EB6 #B64254 #B6A442

monochromatic

#21485C #326B89 #428EB6 #6CA9CA #99C3DA

Accessibility & contrast

On white

3.64

#428EB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#428EB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EB6

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EB6	#FFFFFF	#000000	##000000
##428EB6	1.00	3.64	5.78	5.78
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8DB8

Deuteranopia (green-blind)

#6B81B5

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428eb6;
/* rgb */ color: rgb(66, 142, 182);
/* oklch */ color: oklch(61.6% 0.096 234.3);

Tailwind

colors: {
  custom: {
    50: '#82afcc',
    500: '#428eb6',
    950: '#000000',
  },
}

SCSS

$custom: #428eb6;
$custom-light: #82afcc;
$custom-dark: #000000;

JSON

{
  "hex": "#428eb6",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 182
  },
  "hsl": {
    "h": 200.69,
    "s": 46.774,
    "l": 48.627
  },
  "oklch": {
    "l": 0.6156,
    "c": 0.09621,
    "h": 234.3
  },
  "luminance": 0.23882
}

Semantic roles & 50–950 ramp

primary

#428EB6

secondary

#C6A18E

accent

#7F51D6

background

#F8FAFC

surface

#F0F4F8

border

#CBCED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #428EB6

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

Preview Lab → · Contrast checker → · Palette generator →