#428DBE#428DBE

#428DBE is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.7% C 0.105 H 240.2°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#428DBE
RGB	rgb(66, 141, 190)
HSL	hsl(204, 49%, 50%)
HSV	hsv(204, 65%, 75%)
CMYK	cmyk(65.3%, 25.8%, 0%, 25.5%)
CIE-LAB	lab(56.01, -7.82, -32.39)
CIE-LCH	lch(56.01, 33.32, 256.42°)
OKLab	oklab(61.71% -0.0523 -0.0911)
OKLCH	oklch(61.71% 0.105 240.2)
XYZ	xyz(21.0624, 23.9235, 52.2129)
Luminance	0.2393 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DBE #BE7342

analogous

#42BEB1 #428DBE #424FBE

triadic

#428DBE #BE428D #8DBE42

tetradic

#428DBE #B142BE #BE7342 #4FBE42

square

#428DBE #B142BE #BE7342 #4FBE42

split-complementary

#428DBE #BE424F #BEB142

monochromatic

#224A63 #326B91 #428DBE #70A8CE #9DC4DD

Accessibility & contrast

On white

3.63

#428DBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#428DBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DBE

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DBE	#FFFFFF	#000000	##000000
##428DBE	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778DC0

Deuteranopia (green-blind)

#6681BD

Tritanopia (blue-blind)

#00999E

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #428dbe;
/* rgb */ color: rgb(66, 141, 190);
/* oklch */ color: oklch(61.7% 0.105 240.2);

Tailwind

colors: {
  custom: {
    50: '#83aed1',
    500: '#428dbe',
    950: '#000000',
  },
}

SCSS

$custom: #428dbe;
$custom-light: #83aed1;
$custom-dark: #000000;

JSON

{
  "hex": "#428dbe",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 190
  },
  "hsl": {
    "h": 203.71,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.61707,
    "c": 0.10503,
    "h": 240.2
  },
  "luminance": 0.23926
}

Semantic roles & 50–950 ramp

primary

#428DBE

secondary

#CAA892

accent

#864FD8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428DBE

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

Preview Lab → · Contrast checker → · Palette generator →