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Running Number
6,746,600
HEX
#66F1E8
RGB
102, 241, 232
HSL
176°,83%,67%
HSV
176°,58%,95%
CMYK
58%,0%,4%,5%
Brightness
78%
Type
Light
AA Normal Text: ≥ 4.5:1
AA Large Text: ≥ 3.0:1
AAA Normal Text: ≥ 7.0:1
AAA Large Text: ≥ 4.5:1
#66F1E8 sits at 176° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 83% saturation and 67% lightness, it reads as a richly saturated, light tone — an immediate, signal-grade voice that demands attention. Its RGB mix of 102, 241, 232 produces a 15.31:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #66F1E8 is a clear variant of CSS turquoise — about 48 units away from #40E0D0. Designers reach for cyan hues at this saturation when the brief calls for bold, immediate signal, and at this lightness when they want a present, comfortable mid-canvas voice. On screen the cool cast tends to pair best with warm neutrals in the 25°-45° range to add life.
See how this color appears in real UI elements
Button (filled)
Badge
Progress Bar
Link Hover
Input Focus Ring
Checkbox Active
Toggle Switch On
Slider Thumb
Card Border
Icon Highlight
Tooltip Background
Modal Header
Tab Active
Alert Box
Timeline Dot
Loading Spinner
Dropdown Selected
Table Row Highlight
Calendar Date
Mobile Device
See how to use #66F1E8 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#66f1e8";💡 Click any tab to see how to use #66f1e8 in different programming languages