#4288CE#4288CE

#4288CE is a mid, vivid cyan. Relative luminance 0.232; OKLCH L 61.4% C 0.128 H 250.7°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX#4288CE
RGBrgb(66, 136, 206)
HSLhsl(210, 59%, 53%)
HSVhsv(210, 68%, 81%)
CMYKcmyk(68%, 34%, 0%, 19.2%)
CIE-LABlab(55.30, 0.54, -42.57)
CIE-LCHlch(55.30, 42.57, 270.73°)
OKLaboklab(61.39% -0.0423 -0.1207)
OKLCHoklch(61.39% 0.128 250.7)
XYZxyz(22.1874, 23.2205, 61.6932)
Luminance0.2322 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4288CE #CE8842
analogous
#42CECE #4288CE #4242CE
triadic
#4288CE #CE4288 #88CE42
tetradic
#4288CE #CE42CE #CE8842 #42CE42
square
#4288CE #CE42CE #CE8842 #42CE42
split-complementary
#4288CE #CE4242 #CECE42
monochromatic
#1F4B77 #2B69A7 #4288CE #73A7DB #A3C5E7

Accessibility & contrast

On white

3.72
#4288CE on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.64
#4288CE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4288CE
5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4288CE#FFFFFF#000000##000000
##4288CE1.003.725.645.64
#FFFFFF3.721.0021.0021.00
#0000005.6421.001.001.00
##0000005.6421.001.001.00

Color blindness preview

Protanopia (red-blind)
#698CD1
Deuteranopia (green-blind)
#557ECD
Tritanopia (blue-blind)
#0098A1
Achromatopsia (no color)
#848484

Design tokens & code

CSS
--color: #4288ce;
/* rgb */ color: rgb(66, 136, 206);
/* oklch */ color: oklch(61.4% 0.128 250.7);
Tailwind
colors: {
  custom: {
    50: '#85aadd',
    500: '#4288ce',
    950: '#000000',
  },
}
SCSS
$custom: #4288ce;
$custom-light: #85aadd;
$custom-dark: #000000;
JSON
{
  "hex": "#4288ce",
  "rgb": {
    "r": 66,
    "g": 136,
    "b": 206
  },
  "hsl": {
    "h": 210,
    "s": 58.824,
    "l": 53.333
  },
  "oklch": {
    "l": 0.61391,
    "c": 0.12793,
    "h": 250.7
  },
  "luminance": 0.23223
}

Semantic roles & 50–950 ramp

primary
#4288CE
secondary
#D4B698
accent
#9446E2
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #4288CE

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

Preview Lab → · Contrast checker → · Palette generator →

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