#428DE2#428DE2

#428DE2 is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.6% C 0.148 H 253.5°. Best body text is #000000 at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#428DE2
RGB	rgb(66, 141, 226)
HSL	hsl(212, 73%, 57%)
HSV	hsv(212, 71%, 89%)
CMYK	cmyk(70.8%, 37.6%, 0%, 11.4%)
CIE-LAB	lab(57.75, 4.58, -49.91)
CIE-LCH	lch(57.75, 50.12, 275.24°)
OKLab	oklab(63.64% -0.042 -0.1421)
OKLCH	oklch(63.64% 0.148 253.5)
XYZ	xyz(25.4940, 25.6962, 75.5530)
Luminance	0.2570 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DE2 #E29742

analogous

#42DDE2 #428DE2 #4742E2

triadic

#428DE2 #E2428D #8DE242

tetradic

#428DE2 #E242DD #E29742 #42E247

square

#428DE2 #E242DD #E29742 #42E247

split-complementary

#428DE2 #E24742 #DDE242

monochromatic

#175193 #1F6EC8 #428DE2 #77ADEA #ACCDF2

Accessibility & contrast

On white

3.42

#428DE2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.14

#428DE2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DE2

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DE2	#FFFFFF	#000000	##000000
##428DE2	1.00	3.42	6.14	6.14
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.14	21.00	1.00	1.00
##000000	6.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6693E5

Deuteranopia (green-blind)

#4E84E0

Tritanopia (blue-blind)

#00A1AD

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #428de2;
/* rgb */ color: rgb(66, 141, 226);
/* oklch */ color: oklch(63.6% 0.148 253.5);

Tailwind

colors: {
  custom: {
    50: '#89adeb',
    500: '#428de2',
    950: '#000000',
  },
}

SCSS

$custom: #428de2;
$custom-light: #89adeb;
$custom-dark: #000000;

JSON

{
  "hex": "#428de2",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 226
  },
  "hsl": {
    "h": 211.875,
    "s": 73.394,
    "l": 57.255
  },
  "oklch": {
    "l": 0.63642,
    "c": 0.14821,
    "h": 253.5
  },
  "luminance": 0.25699
}

Semantic roles & 50–950 ramp

primary

#428DE2

secondary

#E0C29F

accent

#9A38F0

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428DE2

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

Preview Lab → · Contrast checker → · Palette generator →