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💡 Click on any color value below to copy it to clipboard
Running Number
6,714,270
HEX
#66739E
RGB
102, 115, 158
HSL
226°,22%,51%
HSV
226°,35%,62%
CMYK
35%,27%,0%,38%
Brightness
45%
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
#66739E sits at 226° on the color wheel, placing it in the blue family of the cool half of the spectrum. With 22% 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, 115, 158 produces a 4.66:1 contrast ratio against white, which clears WCAG AA for body text in that pairing.
In RGB space #66739E is a clear variant of CSS steel blue — about 42 units away from #4682B4. 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 #66739E in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#66739e";💡 Click any tab to see how to use #66739e in different programming languages