#55C9EF#55C9EF

#55C9EF is a light, moderate cyan. Relative luminance 0.499; OKLCH L 78.5% C 0.116 H 223.0°. Best body text is #000000 at 10.99:1 contrast (WCAG AA passes).

Color values

HEX#55C9EF
RGBrgb(85, 201, 239)
HSLhsl(195, 83%, 64%)
HSVhsv(195, 64%, 94%)
CMYKcmyk(64.4%, 15.9%, 0%, 6.3%)
CIE-LABlab(76.03, -21.33, -28.45)
CIE-LCHlch(76.03, 35.56, 233.13°)
OKLaboklab(78.47% -0.0851 -0.0793)
OKLCHoklch(78.47% 0.116 223)
XYZxyz(40.2067, 49.9323, 89.1636)
Luminance0.4994 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#55C9EF #EF7B55
analogous
#55EFC8 #55C9EF #557CEF
triadic
#55C9EF #EF55C9 #C9EF55
tetradic
#55C9EF #C855EF #EF7B55 #7CEF55
square
#55C9EF #C855EF #EF7B55 #7CEF55
split-complementary
#55C9EF #EF557C #EFC855
monochromatic
#118FB8 #1DB7EA #55C9EF #8DDBF4 #C5EDFA

Accessibility & contrast

On white

1.91
#55C9EF on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.99
#55C9EF on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #55C9EF
10.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##55C9EF#FFFFFF#000000##000000
##55C9EF1.001.9110.9910.99
#FFFFFF1.911.0021.0021.00
#00000010.9921.001.001.00
##00000010.9921.001.001.00

Color blindness preview

Protanopia (red-blind)
#B3C5F1
Deuteranopia (green-blind)
#9DB4EF
Tritanopia (blue-blind)
#00D5D5
Achromatopsia (no color)
#BBBBBB

Design tokens & code

CSS
--color: #55c9ef;
/* rgb */ color: rgb(85, 201, 239);
/* oklch */ color: oklch(78.5% 0.116 223.0);
Tailwind
colors: {
  custom: {
    50: '#94d9f4',
    500: '#55c9ef',
    950: '#000000',
  },
}
SCSS
$custom: #55c9ef;
$custom-light: #94d9f4;
$custom-dark: #000000;
JSON
{
  "hex": "#55c9ef",
  "rgb": {
    "r": 85,
    "g": 201,
    "b": 239
  },
  "hsl": {
    "h": 194.805,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.78466,
    "c": 0.11638,
    "h": 223
  },
  "luminance": 0.49937
}

Semantic roles & 50–950 ramp

primary
#55C9EF
secondary
#EBC2B5
accent
#3C06DF
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0F1417
muted
#7E8385

Preview Lab

Preview with #55C9EF

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

Preview Lab → · Contrast checker → · Palette generator →

#55C9EF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva