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Running Number
736,831
HEX
#0B3E3F
RGB
11, 62, 63
HSL
181°,70%,15%
HSV
181°,83%,25%
CMYK
83%,2%,0%,75%
Brightness
18%
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
#0B3E3F sits at 181° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 70% saturation and 15% lightness, it reads as a richly saturated, deep tone — a weighted, dramatic presence with deep undertones. Its RGB mix of 11, 62, 63 produces a 11.83:1 contrast ratio against white, which clears WCAG AAA for body text in that pairing.
In RGB space #0B3E3F is a distant relative of CSS forest green — about 85 units away from #228B22. Designers reach for cyan hues at this saturation when the brief calls for a conversational, mid-energy register, 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 #0B3E3F in different programming languages
| Platform | Languages |
|---|---|
| Frontend | |
| Mobile | |
| Backend | |
| Others |
document.getElementById("box").style.backgroundColor = "#0b3e3f";💡 Click any tab to see how to use #0b3e3f in different programming languages