#428DEA#428DEA

#428DEA is a light, vivid cyan. Relative luminance 0.261; OKLCH L 64.1% C 0.158 H 255.3°. Best body text is #000000 at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#428DEA
RGB	rgb(66, 141, 234)
HSL	hsl(213, 80%, 59%)
HSV	hsv(213, 72%, 92%)
CMYK	cmyk(71.8%, 39.7%, 0%, 8.2%)
CIE-LAB	lab(58.17, 7.40, -53.68)
CIE-LCH	lch(58.17, 54.19, 277.85°)
OKLab	oklab(64.11% -0.0402 -0.1532)
OKLCH	oklch(64.11% 0.158 255.3)
XYZ	xyz(26.6175, 26.1456, 81.4697)
Luminance	0.2615 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DEA #EA9F42

analogous

#42E1EA #428DEA #4B42EA

triadic

#428DEA #EA428D #8DEA42

tetradic

#428DEA #EA42E1 #EA9F42 #42EA4B

square

#428DEA #EA42E1 #EA9F42 #42EA4B

split-complementary

#428DEA #EA4B42 #E1EA42

monochromatic

#1251A0 #186DD7 #428DEA #79AEF0 #B0CFF6

Accessibility & contrast

On white

3.37

#428DEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.23

#428DEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DEA

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DEA	#FFFFFF	#000000	##000000
##428DEA	1.00	3.37	6.23	6.23
#FFFFFF	3.37	1.00	21.00	21.00
#000000	6.23	21.00	1.00	1.00
##000000	6.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6194EE

Deuteranopia (green-blind)

#4685E8

Tritanopia (blue-blind)

#00A3B0

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #428dea;
/* rgb */ color: rgb(66, 141, 234);
/* oklch */ color: oklch(64.1% 0.158 255.3);

Tailwind

colors: {
  custom: {
    50: '#8aadf1',
    500: '#428dea',
    950: '#000000',
  },
}

SCSS

$custom: #428dea;
$custom-light: #8aadf1;
$custom-dark: #000000;

JSON

{
  "hex": "#428dea",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 234
  },
  "hsl": {
    "h": 213.214,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.64114,
    "c": 0.15838,
    "h": 255.3
  },
  "luminance": 0.26149
}

Semantic roles & 50–950 ramp

primary

#428DEA

secondary

#E5C7A3

accent

#9E31F6

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #428DEA

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

Preview Lab → · Contrast checker → · Palette generator →