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💡 Click on any color value below to copy it to clipboard
Running Number
6,727,076
HEX
#66A5A4
RGB
102, 165, 164
HSL
179°,26%,52%
HSV
179°,38%,65%
CMYK
38%,0%,1%,35%
Brightness
57%
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
#66A5A4 sits at 179° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 26% saturation and 52% lightness, it reads as a softly muted, balanced tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 102, 165, 164 produces a 7.48:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #66A5A4 is a clear variant of CSS steel blue — about 50 units away from #4682B4. Designers reach for cyan hues at this saturation when the brief calls for restraint and atmosphere, 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 #66A5A4 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#66a5a4";💡 Click any tab to see how to use #66a5a4 in different programming languages