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💡 Click on any color value below to copy it to clipboard
Running Number
3,159,865
HEX
#303739
RGB
48, 55, 57
HSL
193°,9%,21%
HSV
193°,16%,22%
CMYK
16%,4%,0%,78%
Brightness
21%
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
#303739 sits at 193° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 9% saturation and 21% lightness, it reads as a heavily muted, deep tone — a quiet, restrained presence that recedes rather than competes. Its RGB mix of 48, 55, 57 produces a 12.13:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #303739 is a distant relative of CSS forest green — about 88 units away from #228B22. Designers reach for cyan hues at this saturation when the brief calls for restraint and atmosphere, 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 #303739 in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#303739";💡 Click any tab to see how to use #303739 in different programming languages