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💡 Click on any color value below to copy it to clipboard
Running Number
273,211
HEX
#042B3B
RGB
4, 43, 59
HSL
197°,87%,12%
HSV
197°,93%,23%
CMYK
93%,27%,0%,77%
Brightness
13%
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
#042B3B sits at 197° on the color wheel, placing it in the azure family of the cool half of the spectrum. With 87% saturation and 12% lightness, it reads as a fully saturated, deep tone — a weighted, dramatic presence with deep undertones. Its RGB mix of 4, 43, 59 produces a 14.85:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #042B3B is a distant relative of CSS black — about 73 units away from #000000. Designers reach for azure hues at this saturation when the brief calls for bold, immediate signal, and at this lightness when they want weight, depth, and grounded contrast. 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 #042B3B in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#042b3b";💡 Click any tab to see how to use #042b3b in different programming languages