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Running Number
6,725,518
HEX
#669F8E
RGB
102, 159, 142
HSL
162°,23%,51%
HSV
162°,36%,62%
CMYK
36%,0%,11%,38%
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
#669F8E sits at 162° on the color wheel, placing it in the spring green family of the cool half of the spectrum. With 23% saturation and 51% 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, 159, 142 produces a 6.91:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.
In RGB space #669F8E is a clear variant of CSS gray — about 43 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 #669F8E in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#669f8e";💡 Click any tab to see how to use #669f8e in different programming languages