#428CC7#428CC7

#428CC7 is a mid, moderate cyan. Relative luminance 0.240; OKLCH L 61.9% C 0.116 H 245.4°. Best body text is #000000 at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#428CC7
RGB	rgb(66, 140, 199)
HSL	hsl(207, 54%, 52%)
HSV	hsv(207, 67%, 78%)
CMYK	cmyk(66.8%, 29.6%, 0%, 22%)
CIE-LAB	lab(56.12, -4.21, -37.31)
CIE-LCH	lch(56.12, 37.55, 263.56°)
OKLab	oklab(61.93% -0.0483 -0.1054)
OKLCH	oklch(61.93% 0.116 245.4)
XYZ	xyz(21.9298, 24.0357, 57.5054)
Luminance	0.2404 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CC7 #C77D42

analogous

#42C7C0 #428CC7 #4249C7

triadic

#428CC7 #C7428C #8CC742

tetradic

#428CC7 #C042C7 #C77D42 #49C742

square

#428CC7 #C042C7 #C77D42 #49C742

split-complementary

#428CC7 #C74249 #C7C042

monochromatic

#214C6E #2F6C9D #428CC7 #71A9D5 #A0C5E3

Accessibility & contrast

On white

3.62

#428CC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.81

#428CC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CC7

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CC7	#FFFFFF	#000000	##000000
##428CC7	1.00	3.62	5.81	5.81
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.81	21.00	1.00	1.00
##000000	5.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728ECA

Deuteranopia (green-blind)

#5F81C6

Tritanopia (blue-blind)

#009AA1

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428cc7;
/* rgb */ color: rgb(66, 140, 199);
/* oklch */ color: oklch(61.9% 0.116 245.4);

Tailwind

colors: {
  custom: {
    50: '#84add8',
    500: '#428cc7',
    950: '#000000',
  },
}

SCSS

$custom: #428cc7;
$custom-light: #84add8;
$custom-dark: #000000;

JSON

{
  "hex": "#428cc7",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 199
  },
  "hsl": {
    "h": 206.617,
    "s": 54.286,
    "l": 51.961
  },
  "oklch": {
    "l": 0.6193,
    "c": 0.11594,
    "h": 245.4
  },
  "luminance": 0.24038
}

Semantic roles & 50–950 ramp

primary

#428CC7

secondary

#D0AF95

accent

#8C4ADE

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1014

muted

#7D7F83

Preview Lab

Preview with #428CC7

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

Preview Lab → · Contrast checker → · Palette generator →