#66B7F7#66B7F7

#66B7F7 is a light, vivid cyan. Relative luminance 0.434; OKLCH L 75.4% C 0.122 H 244.3°. Best body text is #000000 at 9.68:1 contrast (WCAG AA passes).

Color values

HEX#66B7F7
RGBrgb(102, 183, 247)
HSLhsl(206, 90%, 68%)
HSVhsv(206, 59%, 97%)
CMYKcmyk(58.7%, 25.9%, 0%, 3.1%)
CIE-LABlab(71.83, -6.40, -39.21)
CIE-LCHlch(71.83, 39.73, 260.72°)
OKLaboklab(75.39% -0.053 -0.1101)
OKLCHoklch(75.39% 0.122 244.3)
XYZxyz(39.1953, 43.4035, 94.2898)
Luminance0.4341 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B7F7 #F7A666
analogous
#66F7EF #66B7F7 #666EF7
triadic
#66B7F7 #F766B7 #B7F766
tetradic
#66B7F7 #EF66F7 #F7A666 #6EF766
square
#66B7F7 #EF66F7 #F7A666 #6EF766
split-complementary
#66B7F7 #F7666E #F7EF66
monochromatic
#0B7DD7 #2C9CF4 #66B7F7 #A0D2FA #DAEEFD

Accessibility & contrast

On white

2.17
#66B7F7 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.68
#66B7F7 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B7F7
9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B7F7#FFFFFF#000000##000000
##66B7F71.002.179.689.68
#FFFFFF2.171.0021.0021.00
#0000009.6821.001.001.00
##0000009.6821.001.001.00

Color blindness preview

Protanopia (red-blind)
#9BB8FA
Deuteranopia (green-blind)
#88AAF6
Tritanopia (blue-blind)
#00C6CD
Achromatopsia (no color)
#B0B0B0

Design tokens & code

CSS
--color: #66b7f7;
/* rgb */ color: rgb(102, 183, 247);
/* oklch */ color: oklch(75.4% 0.122 244.3);
Tailwind
colors: {
  custom: {
    50: '#9cccfa',
    500: '#66b7f7',
    950: '#000000',
  },
}
SCSS
$custom: #66b7f7;
$custom-light: #9cccfa;
$custom-dark: #000000;
JSON
{
  "hex": "#66b7f7",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 247
  },
  "hsl": {
    "h": 206.483,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.7539,
    "c": 0.12221,
    "h": 244.3
  },
  "luminance": 0.43407
}

Semantic roles & 50–950 ramp

primary
#66B7F7
secondary
#F2DAC7
accent
#6500E6
background
#FAFCFF
surface
#F4F8FF
border
#CED1D7
text
#0F1317
muted
#7F8285

Preview Lab

Preview with #66B7F7

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

Preview Lab → · Contrast checker → · Palette generator →

#66B7F7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva