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💡 Click on any color value below to copy it to clipboard
Running Number
1,785,756
HEX
#1B3F9C
RGB
27, 63, 156
HSL
223°,70%,36%
HSV
223°,83%,61%
CMYK
83%,60%,0%,39%
Brightness
25%
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
#1B3F9C sits at 223° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 70% saturation and 36% lightness, it reads as a richly saturated, shadowed tone — a balanced mid-energy presence that sits comfortably alongside other UI tones. Its RGB mix of 27, 63, 156 produces a 9.38:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #1B3F9C is a distant relative of CSS navy — about 74 units away from #000080. 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 #1B3F9C in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#1b3f9c";💡 Click any tab to see how to use #1b3f9c in different programming languages