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Running Number
6,711,933
HEX
#666A7D
RGB
102, 106, 125
HSL
230°,10%,45%
HSV
230°,18%,49%
CMYK
18%,15%,0%,51%
Brightness
42%
Type
Dark
AA Normal Text: ≥ 4.5:1
AA Large Text: ≥ 3.0:1
AAA Normal Text: ≥ 7.0:1
AAA Large Text: ≥ 4.5:1
#666A7D sits at 230° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 10% saturation and 45% lightness, it reads as a heavily muted, balanced tone — a quiet, restrained presence that recedes rather than competes. Its RGB mix of 102, 106, 125 produces a 5.35:1 contrast ratio against white, which clears WCAG AA for body text in that pairing.
In RGB space #666A7D is a close cousin of CSS dim gray — about 20 units away from #696969. Designers reach for blue 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 #666A7D in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#666a7d";💡 Click any tab to see how to use #666a7d in different programming languages