#428DD0#428DD0

#428DD0 is a light, vivid cyan. Relative luminance 0.248; OKLCH L 62.6% C 0.126 H 248.2°. Best body text is #000000 at 5.95:1 contrast (WCAG AA passes).

Color values

HEX#428DD0
RGBrgb(66, 141, 208)
HSLhsl(208, 60%, 54%)
HSVhsv(208, 68%, 82%)
CMYKcmyk(68.3%, 32.2%, 0%, 18.4%)
CIE-LABlab(56.84, -1.70, -41.26)
CIE-LCHlch(56.84, 41.30, 267.64°)
OKLaboklab(62.63% -0.0467 -0.1169)
OKLCHoklch(62.63% 0.126 248.2)
XYZxyz(23.1525, 24.7596, 63.2212)
Luminance0.2476 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#428DD0 #D08542
analogous
#42D0CC #428DD0 #4246D0
triadic
#428DD0 #D0428D #8DD042
tetradic
#428DD0 #CC42D0 #D08542 #46D042
square
#428DD0 #CC42D0 #D08542 #46D042
split-complementary
#428DD0 #D04246 #D0CC42
monochromatic
#1E4E79 #2A6EAA #428DD0 #73ABDC #A4C8E8

Accessibility & contrast

On white

3.53
#428DD0 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.95
#428DD0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428DD0
5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##428DD0#FFFFFF#000000##000000
##428DD01.003.535.955.95
#FFFFFF3.531.0021.0021.00
#0000005.9521.001.001.00
##0000005.9521.001.001.00

Color blindness preview

Protanopia (red-blind)
#6F90D3
Deuteranopia (green-blind)
#5B82CF
Tritanopia (blue-blind)
#009DA5
Achromatopsia (no color)
#888888

Design tokens & code

CSS
--color: #428dd0;
/* rgb */ color: rgb(66, 141, 208);
/* oklch */ color: oklch(62.6% 0.126 248.2);
Tailwind
colors: {
  custom: {
    50: '#86aede',
    500: '#428dd0',
    950: '#000000',
  },
}
SCSS
$custom: #428dd0;
$custom-light: #86aede;
$custom-dark: #000000;
JSON
{
  "hex": "#428dd0",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 208
  },
  "hsl": {
    "h": 208.31,
    "s": 60.169,
    "l": 53.725
  },
  "oklch": {
    "l": 0.62634,
    "c": 0.12586,
    "h": 248.2
  },
  "luminance": 0.24762
}

Semantic roles & 50–950 ramp

primary
#428DD0
secondary
#D5B599
accent
#8F44E3
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #428DD0

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

Preview Lab → · Contrast checker → · Palette generator →

#428DD0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva