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Running Number
6,735,527
HEX
#66C6A7
RGB
102, 198, 167
HSL
161°,46%,59%
HSV
161°,48%,78%
CMYK
48%,0%,16%,22%
Brightness
65%
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
#66C6A7 sits at 161° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 46% saturation and 59% lightness, it reads as a moderately saturated, light tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 102, 198, 167 produces a 10.20:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #66C6A7 is a distant relative of CSS turquoise — about 62 units away from #40E0D0. Designers reach for spring green hues at this saturation when the brief calls for a conversational, mid-energy register, 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 #66C6A7 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#66c6a7";💡 Click any tab to see how to use #66c6a7 in different programming languages