#66B8F5#66B8F5

#66B8F5 is a light, moderate cyan. Relative luminance 0.437; OKLCH L 75.5% C 0.119 H 242.7°. Best body text is #000000 at 9.74:1 contrast (WCAG AA passes).

Color values

HEX#66B8F5
RGBrgb(102, 184, 245)
HSLhsl(206, 88%, 68%)
HSVhsv(206, 58%, 96%)
CMYKcmyk(58.4%, 24.9%, 0%, 3.9%)
CIE-LABlab(72.02, -7.57, -37.82)
CIE-LCHlch(72.02, 38.57, 258.69°)
OKLaboklab(75.52% -0.0547 -0.1061)
OKLCHoklch(75.52% 0.119 242.7)
XYZxyz(39.0953, 43.6947, 92.7421)
Luminance0.4370 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B8F5 #F5A366
analogous
#66F5EA #66B8F5 #6671F5
triadic
#66B8F5 #F566B8 #B8F566
tetradic
#66B8F5 #EA66F5 #F5A366 #71F566
square
#66B8F5 #EA66F5 #F5A366 #71F566
split-complementary
#66B8F5 #F56671 #F5EA66
monochromatic
#0E7FD3 #2D9DF1 #66B8F5 #9FD3F9 #D9EDFD

Accessibility & contrast

On white

2.16
#66B8F5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.74
#66B8F5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B8F5
9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B8F5#FFFFFF#000000##000000
##66B8F51.002.169.749.74
#FFFFFF2.161.0021.0021.00
#0000009.7421.001.001.00
##0000009.7421.001.001.00

Color blindness preview

Protanopia (red-blind)
#9DB9F8
Deuteranopia (green-blind)
#8AAAF4
Tritanopia (blue-blind)
#00C7CD
Achromatopsia (no color)
#B1B1B1

Design tokens & code

CSS
--color: #66b8f5;
/* rgb */ color: rgb(102, 184, 245);
/* oklch */ color: oklch(75.5% 0.119 242.7);
Tailwind
colors: {
  custom: {
    50: '#9ccdf8',
    500: '#66b8f5',
    950: '#000000',
  },
}
SCSS
$custom: #66b8f5;
$custom-light: #9ccdf8;
$custom-dark: #000000;
JSON
{
  "hex": "#66b8f5",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 245
  },
  "hsl": {
    "h": 205.594,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.75517,
    "c": 0.11937,
    "h": 242.7
  },
  "luminance": 0.43698
}

Semantic roles & 50–950 ramp

primary
#66B8F5
secondary
#F1D8C6
accent
#6201E4
background
#FAFCFF
surface
#F4F8FF
border
#CED1D7
text
#0F1317
muted
#7F8285

Preview Lab

Preview with #66B8F5

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

Preview Lab → · Contrast checker → · Palette generator →

#66B8F5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva