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Running Number
6,727,036
HEX
#66A57C
RGB
102, 165, 124
HSL
141°,26%,52%
HSV
141°,38%,65%
CMYK
38%,0%,25%,35%
Brightness
55%
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
#66A57C sits at 141° on the color wheel, placing it in the spring green 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, 124 produces a 7.24:1 contrast ratio against black, which clears WCAG AAA for body text in that pairing.
In RGB space #66A57C is a clear variant of CSS gray — about 45 units away from #808080. Designers reach for spring green 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 #66A57C in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#66a57c";💡 Click any tab to see how to use #66a57c in different programming languages