#428CEA#428CEA

#428CEA is a light, vivid cyan. Relative luminance 0.259; OKLCH L 63.9% C 0.159 H 255.7°. Best body text is #000000 at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#428CEA
RGB	rgb(66, 140, 234)
HSL	hsl(214, 80%, 59%)
HSV	hsv(214, 72%, 92%)
CMYK	cmyk(71.8%, 40.2%, 0%, 8.2%)
CIE-LAB	lab(57.90, 8.00, -54.13)
CIE-LCH	lch(57.90, 54.71, 278.41°)
OKLab	oklab(63.9% -0.0393 -0.1545)
OKLCH	oklch(63.9% 0.159 255.7)
XYZ	xyz(26.4707, 25.8520, 81.4208)
Luminance	0.2586 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428CEA #EAA042

analogous

#42E0EA #428CEA #4C42EA

triadic

#428CEA #EA428C #8CEA42

tetradic

#428CEA #EA42E0 #EAA042 #42EA4C

square

#428CEA #EA42E0 #EAA042 #42EA4C

split-complementary

#428CEA #EA4C42 #E0EA42

monochromatic

#1250A0 #186CD7 #428CEA #79AEF0 #B0CFF6

Accessibility & contrast

On white

3.40

#428CEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.17

#428CEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428CEA

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428CEA	#FFFFFF	#000000	##000000
##428CEA	1.00	3.40	6.17	6.17
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.17	21.00	1.00	1.00
##000000	6.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6094EE

Deuteranopia (green-blind)

#4484E8

Tritanopia (blue-blind)

#00A2B0

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #428cea;
/* rgb */ color: rgb(66, 140, 234);
/* oklch */ color: oklch(63.9% 0.159 255.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#428cea",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 234
  },
  "hsl": {
    "h": 213.571,
    "s": 80,
    "l": 58.824
  },
  "oklch": {
    "l": 0.63897,
    "c": 0.15942,
    "h": 255.7
  },
  "luminance": 0.25855
}

Semantic roles & 50–950 ramp

primary

#428CEA

secondary

#E5C8A3

accent

#A031F6

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #428CEA

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

Preview Lab → · Contrast checker → · Palette generator →