#428CC6#428CC6

#428CC6 is a mid, moderate cyan. Relative luminance 0.240; OKLCH L 61.9% C 0.115 H 244.9°. Best body text is #000000 at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#428CC6
RGB	rgb(66, 140, 198)
HSL	hsl(206, 54%, 52%)
HSV	hsv(206, 67%, 78%)
CMYK	cmyk(66.7%, 29.3%, 0%, 22.4%)
CIE-LAB	lab(56.08, -4.55, -36.82)
CIE-LCH	lch(56.08, 37.10, 262.96°)
OKLab	oklab(61.88% -0.0487 -0.1039)
OKLCH	oklch(61.88% 0.115 244.9)
XYZ	xyz(21.8140, 23.9894, 56.8959)
Luminance	0.2399 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CC6 #C67C42

analogous

#42C6BE #428CC6 #424AC6

triadic

#428CC6 #C6428C #8CC642

tetradic

#428CC6 #BE42C6 #C67C42 #4AC642

square

#428CC6 #BE42C6 #C67C42 #4AC642

split-complementary

#428CC6 #C6424A #C6BE42

monochromatic

#214B6D #2F6C9C #428CC6 #71A9D4 #A0C5E2

Accessibility & contrast

On white

3.62

#428CC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.80

#428CC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CC6

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CC6	#FFFFFF	#000000	##000000
##428CC6	1.00	3.62	5.80	5.80
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.80	21.00	1.00	1.00
##000000	5.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728EC9

Deuteranopia (green-blind)

#6081C5

Tritanopia (blue-blind)

#009AA0

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428cc6;
/* rgb */ color: rgb(66, 140, 198);
/* oklch */ color: oklch(61.9% 0.115 244.9);

Tailwind

colors: {
  custom: {
    50: '#84add7',
    500: '#428cc6',
    950: '#000000',
  },
}

SCSS

$custom: #428cc6;
$custom-light: #84add7;
$custom-dark: #000000;

JSON

{
  "hex": "#428cc6",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 198
  },
  "hsl": {
    "h": 206.364,
    "s": 53.659,
    "l": 51.765
  },
  "oklch": {
    "l": 0.61878,
    "c": 0.11478,
    "h": 244.9
  },
  "luminance": 0.23992
}

Semantic roles & 50–950 ramp

primary

#428CC6

secondary

#CFAE95

accent

#8B4BDD

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428CC6

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

Preview Lab → · Contrast checker → · Palette generator →