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Running Number
3,831,974
HEX
#3A78A6
RGB
58, 120, 166
HSL
206°,48%,44%
HSV
206°,65%,65%
CMYK
65%,28%,0%,35%
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
#3A78A6 sits at 206° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 48% saturation and 44% lightness, it reads as a moderately saturated, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 58, 120, 166 produces a 4.75:1 contrast ratio against white, which clears WCAG AA for body text in that pairing.
In RGB space #3A78A6 is a close cousin of CSS steel blue — about 21 units away from #4682B4. Designers reach for azure hues at this saturation when the brief calls for a conversational, mid-energy register, 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 #3A78A6 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#3a78a6";💡 Click any tab to see how to use #3a78a6 in different programming languages