#428BED#428BED

#428BED is a light, vivid cyan. Relative luminance 0.257; OKLCH L 63.9% C 0.164 H 256.7°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#428BED
RGB	rgb(66, 139, 237)
HSL	hsl(214, 83%, 59%)
HSV	hsv(214, 72%, 93%)
CMYK	cmyk(72.2%, 41.4%, 0%, 7.1%)
CIE-LAB	lab(57.78, 9.67, -55.97)
CIE-LCH	lch(57.78, 56.80, 279.80°)
OKLab	oklab(63.86% -0.0378 -0.1599)
OKLCH	oklch(63.86% 0.164 256.7)
XYZ	xyz(26.7598, 25.7350, 83.6614)
Luminance	0.2574 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428BED #EDA442

analogous

#42E1ED #428BED #4F42ED

triadic

#428BED #ED428B #8BED42

tetradic

#428BED #ED42E1 #EDA442 #42ED4F

square

#428BED #ED42E1 #EDA442 #42ED4F

split-complementary

#428BED #ED4F42 #E1ED42

monochromatic

#104FA5 #156ADD #428BED #7AADF2 #B2D0F8

Accessibility & contrast

On white

3.42

#428BED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.15

#428BED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428BED

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428BED	#FFFFFF	#000000	##000000
##428BED	1.00	3.42	6.15	6.15
#FFFFFF	3.42	1.00	21.00	21.00
#000000	6.15	21.00	1.00	1.00
##000000	6.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C93F1

Deuteranopia (green-blind)

#3F84EB

Tritanopia (blue-blind)

#00A2B0

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #428bed;
/* rgb */ color: rgb(66, 139, 237);
/* oklch */ color: oklch(63.9% 0.164 256.7);

Tailwind

colors: {
  custom: {
    50: '#8bacf3',
    500: '#428bed',
    950: '#000000',
  },
}

SCSS

$custom: #428bed;
$custom-light: #8bacf3;
$custom-dark: #000000;

JSON

{
  "hex": "#428bed",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 237
  },
  "hsl": {
    "h": 214.386,
    "s": 82.609,
    "l": 59.412
  },
  "oklch": {
    "l": 0.63864,
    "c": 0.16434,
    "h": 256.7
  },
  "luminance": 0.25738
}

Semantic roles & 50–950 ramp

primary

#428BED

secondary

#E7CAA4

accent

#A32FF9

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D1017

muted

#7E7F85

Preview Lab

Preview with #428BED

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

Preview Lab → · Contrast checker → · Palette generator →