#4288DC#4288DC

#4288DC is a light, vivid cyan. Relative luminance 0.239; OKLCH L 62.2% C 0.146 H 254.6°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX#4288DC
RGBrgb(66, 136, 220)
HSLhsl(213, 69%, 56%)
HSVhsv(213, 70%, 86%)
CMYKcmyk(70%, 38.2%, 0%, 13.7%)
CIE-LABlab(56.02, 5.45, -49.30)
CIE-LCHlch(56.02, 49.60, 276.30°)
OKLaboklab(62.19% -0.0388 -0.1404)
OKLCHoklch(62.19% 0.146 254.6)
XYZxyz(23.9644, 23.9313, 71.0525)
Luminance0.2393 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4288DC #DC9642
analogous
#42D5DC #4288DC #4942DC
triadic
#4288DC #DC4288 #88DC42
tetradic
#4288DC #DC42D5 #DC9642 #42DC49
square
#4288DC #DC42D5 #DC9642 #42DC49
split-complementary
#4288DC #DC4942 #D5DC42
monochromatic
#1A4D8A #2369BE #4288DC #76A9E6 #A9C9EF

Accessibility & contrast

On white

3.63
#4288DC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.79
#4288DC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288DC
5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4288DC#FFFFFF#000000##000000
##4288DC1.003.635.795.79
#FFFFFF3.631.0021.0021.00
#0000005.7921.001.001.00
##0000005.7921.001.001.00

Color blindness preview

Protanopia (red-blind)
#618EDF
Deuteranopia (green-blind)
#4A80DA
Tritanopia (blue-blind)
#009CA7
Achromatopsia (no color)
#868686

Design tokens & code

CSS
--color: #4288dc;
/* rgb */ color: rgb(66, 136, 220);
/* oklch */ color: oklch(62.2% 0.146 254.6);
Tailwind
colors: {
  custom: {
    50: '#88aae7',
    500: '#4288dc',
    950: '#000000',
  },
}
SCSS
$custom: #4288dc;
$custom-light: #88aae7;
$custom-dark: #000000;
JSON
{
  "hex": "#4288dc",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 220
  },
  "hsl": {
    "h": 212.727,
    "s": 68.75,
    "l": 56.078
  },
  "oklch": {
    "l": 0.6219,
    "c": 0.14569,
    "h": 254.6
  },
  "luminance": 0.23934
}

Semantic roles & 50–950 ramp

primary
#4288DC
secondary
#DDC09D
accent
#9C3CEC
background
#F9FAFE
surface
#F1F4FC
border
#CBCED5
text
#0D0F16
muted
#7E7F84

Preview Lab

Preview with #4288DC

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

Preview Lab → · Contrast checker → · Palette generator →

#4288DC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva