#428AE0#428AE0

#428AE0 is a light, vivid cyan. Relative luminance 0.247; OKLCH L 62.9% C 0.149 H 254.5°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#428AE0
RGB	rgb(66, 138, 224)
HSL	hsl(213, 72%, 57%)
HSV	hsv(213, 71%, 88%)
CMYK	cmyk(70.5%, 38.4%, 0%, 12.2%)
CIE-LAB	lab(56.80, 5.66, -50.31)
CIE-LCH	lch(56.80, 50.63, 276.42°)
OKLab	oklab(62.87% -0.0397 -0.1433)
OKLCH	oklch(62.87% 0.149 254.5)
XYZ	xyz(24.7848, 24.7143, 73.9707)
Luminance	0.2472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428AE0 #E09842

analogous

#42D9E0 #428AE0 #4942E0

triadic

#428AE0 #E0428A #8AE042

tetradic

#428AE0 #E042D9 #E09842 #42E049

square

#428AE0 #E042D9 #E09842 #42E049

split-complementary

#428AE0 #E04942 #D9E042

monochromatic

#184E90 #206BC5 #428AE0 #77ABE9 #ABCBF1

Accessibility & contrast

On white

3.53

#428AE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#428AE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428AE0

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428AE0	#FFFFFF	#000000	##000000
##428AE0	1.00	3.53	5.94	5.94
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.94	21.00	1.00	1.00
##000000	5.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6290E3

Deuteranopia (green-blind)

#4A82DE

Tritanopia (blue-blind)

#009EAA

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #428ae0;
/* rgb */ color: rgb(66, 138, 224);
/* oklch */ color: oklch(62.9% 0.149 254.5);

Tailwind

colors: {
  custom: {
    50: '#88abea',
    500: '#428ae0',
    950: '#000000',
  },
}

SCSS

$custom: #428ae0;
$custom-light: #88abea;
$custom-dark: #000000;

JSON

{
  "hex": "#428ae0",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 224
  },
  "hsl": {
    "h": 212.658,
    "s": 71.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.62865,
    "c": 0.14875,
    "h": 254.5
  },
  "luminance": 0.24717
}

Semantic roles & 50–950 ramp

primary

#428AE0

secondary

#DFC29F

accent

#9C39EF

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428AE0

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

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