#428FC7#428FC7

#428FC7 is a light, moderate cyan. Relative luminance 0.249; OKLCH L 62.6% C 0.114 H 243.1°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#428FC7
RGB	rgb(66, 143, 199)
HSL	hsl(205, 54%, 52%)
HSV	hsv(205, 67%, 78%)
CMYK	cmyk(66.8%, 28.1%, 0%, 22%)
CIE-LAB	lab(57.00, -5.94, -35.94)
CIE-LCH	lch(57.00, 36.42, 260.62°)
OKLab	oklab(62.62% -0.0514 -0.1014)
OKLCH	oklch(62.62% 0.114 243.1)
XYZ	xyz(22.3741, 24.9243, 57.6535)
Luminance	0.2493 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428FC7 #C77A42

analogous

#42C7BD #428FC7 #424DC7

triadic

#428FC7 #C7428F #8FC742

tetradic

#428FC7 #BD42C7 #C77A42 #4DC742

square

#428FC7 #BD42C7 #C77A42 #4DC742

split-complementary

#428FC7 #C7424D #C7BD42

monochromatic

#214D6E #2F6F9D #428FC7 #71ABD5 #A0C7E3

Accessibility & contrast

On white

3.51

#428FC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#428FC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428FC7

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428FC7	#FFFFFF	#000000	##000000
##428FC7	1.00	3.51	5.99	5.99
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7690CA

Deuteranopia (green-blind)

#6483C6

Tritanopia (blue-blind)

#009DA2

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #428fc7;
/* rgb */ color: rgb(66, 143, 199);
/* oklch */ color: oklch(62.6% 0.114 243.1);

Tailwind

colors: {
  custom: {
    50: '#84afd8',
    500: '#428fc7',
    950: '#000000',
  },
}

SCSS

$custom: #428fc7;
$custom-light: #84afd8;
$custom-dark: #000000;

JSON

{
  "hex": "#428fc7",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 199
  },
  "hsl": {
    "h": 205.263,
    "s": 54.286,
    "l": 51.961
  },
  "oklch": {
    "l": 0.62623,
    "c": 0.11365,
    "h": 243.1
  },
  "luminance": 0.24927
}

Semantic roles & 50–950 ramp

primary

#428FC7

secondary

#D0AE95

accent

#884ADE

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428FC7

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

Preview Lab → · Contrast checker → · Palette generator →