#428DE1#428DE1

#428DE1 is a light, vivid cyan. Relative luminance 0.256; OKLCH L 63.6% C 0.147 H 253.3°. Best body text is #000000 at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#428DE1
RGB	rgb(66, 141, 225)
HSL	hsl(212, 73%, 57%)
HSV	hsv(212, 71%, 88%)
CMYK	cmyk(70.7%, 37.3%, 0%, 11.8%)
CIE-LAB	lab(57.70, 4.23, -49.44)
CIE-LCH	lch(57.70, 49.62, 274.89°)
OKLab	oklab(63.58% -0.0422 -0.1407)
OKLCH	oklch(63.58% 0.147 253.3)
XYZ	xyz(25.3572, 25.6415, 74.8325)
Luminance	0.2564 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428DE1 #E19642

analogous

#42DDE1 #428DE1 #4742E1

triadic

#428DE1 #E1428D #8DE142

tetradic

#428DE1 #E142DD #E19642 #42E147

square

#428DE1 #E142DD #E19642 #42E147

split-complementary

#428DE1 #E14742 #DDE142

monochromatic

#175192 #1F6EC6 #428DE1 #77ADE9 #ACCDF2

Accessibility & contrast

On white

3.43

#428DE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.13

#428DE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DE1

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428DE1	#FFFFFF	#000000	##000000
##428DE1	1.00	3.43	6.13	6.13
#FFFFFF	3.43	1.00	21.00	21.00
#000000	6.13	21.00	1.00	1.00
##000000	6.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6793E4

Deuteranopia (green-blind)

#4F84DF

Tritanopia (blue-blind)

#00A1AC

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #428de1;
/* rgb */ color: rgb(66, 141, 225);
/* oklch */ color: oklch(63.6% 0.147 253.3);

Tailwind

colors: {
  custom: {
    50: '#89adeb',
    500: '#428de1',
    950: '#000000',
  },
}

SCSS

$custom: #428de1;
$custom-light: #89adeb;
$custom-dark: #000000;

JSON

{
  "hex": "#428de1",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 225
  },
  "hsl": {
    "h": 211.698,
    "s": 72.603,
    "l": 57.059
  },
  "oklch": {
    "l": 0.63584,
    "c": 0.14695,
    "h": 253.3
  },
  "luminance": 0.25644
}

Semantic roles & 50–950 ramp

primary

#428DE1

secondary

#E0C19F

accent

#9938EF

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D1016

muted

#7E7F84

Preview Lab

Preview with #428DE1

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

Preview Lab → · Contrast checker → · Palette generator →