#428BC6#428BC6

#428BC6 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.6% C 0.116 H 245.7°. Best body text is #000000 at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#428BC6
RGB	rgb(66, 139, 198)
HSL	hsl(207, 54%, 52%)
HSV	hsv(207, 67%, 78%)
CMYK	cmyk(66.7%, 29.8%, 0%, 22.4%)
CIE-LAB	lab(55.78, -3.97, -37.28)
CIE-LCH	lch(55.78, 37.49, 263.92°)
OKLab	oklab(61.65% -0.0476 -0.1053)
OKLCH	oklch(61.65% 0.116 245.7)
XYZ	xyz(21.6686, 23.6985, 56.8474)
Luminance	0.2370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BC6 #C67D42

analogous

#42C6BF #428BC6 #4249C6

triadic

#428BC6 #C6428B #8BC642

tetradic

#428BC6 #BF42C6 #C67D42 #49C642

square

#428BC6 #BF42C6 #C67D42 #49C642

split-complementary

#428BC6 #C64249 #C6BF42

monochromatic

#214B6D #2F6B9C #428BC6 #71A8D4 #A0C5E2

Accessibility & contrast

On white

3.66

#428BC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.74

#428BC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BC6

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BC6	#FFFFFF	#000000	##000000
##428BC6	1.00	3.66	5.74	5.74
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.74	21.00	1.00	1.00
##000000	5.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#718DC9

Deuteranopia (green-blind)

#5F80C5

Tritanopia (blue-blind)

#0099A0

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428bc6;
/* rgb */ color: rgb(66, 139, 198);
/* oklch */ color: oklch(61.6% 0.116 245.7);

Tailwind

colors: {
  custom: {
    50: '#84acd7',
    500: '#428bc6',
    950: '#000000',
  },
}

SCSS

$custom: #428bc6;
$custom-light: #84acd7;
$custom-dark: #000000;

JSON

{
  "hex": "#428bc6",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 198
  },
  "hsl": {
    "h": 206.818,
    "s": 53.659,
    "l": 51.765
  },
  "oklch": {
    "l": 0.61647,
    "c": 0.11556,
    "h": 245.7
  },
  "luminance": 0.23701
}

Semantic roles & 50–950 ramp

primary

#428BC6

secondary

#CFAF95

accent

#8C4BDD

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428BC6

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

Preview Lab → · Contrast checker → · Palette generator →