#428EBE#428EBE

#428EBE is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 61.9% C 0.104 H 239.3°. Best body text is #000000 at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#428EBE
RGB	rgb(66, 142, 190)
HSL	hsl(203, 49%, 50%)
HSV	hsv(203, 65%, 75%)
CMYK	cmyk(65.3%, 25.3%, 0%, 25.5%)
CIE-LAB	lab(56.31, -8.39, -31.93)
CIE-LCH	lch(56.31, 33.01, 255.27°)
OKLab	oklab(61.94% -0.0533 -0.0898)
OKLCH	oklch(61.94% 0.104 239.3)
XYZ	xyz(21.2105, 24.2198, 52.2623)
Luminance	0.2422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428EBE #BE7242

analogous

#42BEB0 #428EBE #4250BE

triadic

#428EBE #BE428E #8EBE42

tetradic

#428EBE #B042BE #BE7242 #50BE42

square

#428EBE #B042BE #BE7242 #50BE42

split-complementary

#428EBE #BE4250 #BEB042

monochromatic

#224A63 #326C91 #428EBE #70A9CE #9DC4DD

Accessibility & contrast

On white

3.59

#428EBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.84

#428EBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428EBE

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428EBE	#FFFFFF	#000000	##000000
##428EBE	1.00	3.59	5.84	5.84
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.84	21.00	1.00	1.00
##000000	5.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788EC0

Deuteranopia (green-blind)

#6782BD

Tritanopia (blue-blind)

#009A9E

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #428ebe;
/* rgb */ color: rgb(66, 142, 190);
/* oklch */ color: oklch(61.9% 0.104 239.3);

Tailwind

colors: {
  custom: {
    50: '#83afd1',
    500: '#428ebe',
    950: '#000000',
  },
}

SCSS

$custom: #428ebe;
$custom-light: #83afd1;
$custom-dark: #000000;

JSON

{
  "hex": "#428ebe",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 190
  },
  "hsl": {
    "h": 203.226,
    "s": 48.819,
    "l": 50.196
  },
  "oklch": {
    "l": 0.61942,
    "c": 0.1044,
    "h": 239.3
  },
  "luminance": 0.24222
}

Semantic roles & 50–950 ramp

primary

#428EBE

secondary

#CAA892

accent

#844FD8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C1014

muted

#7D7F82

Preview Lab

Preview with #428EBE

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

Preview Lab → · Contrast checker → · Palette generator →