Exploring the Color #3F9491

#3F9491 sits at 178° on the color wheel, placing it in the cyan family of the cool half of the spectrum. With 40% saturation and 41% 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 63, 148, 145 produces a 5.86:1 contrast ratio against black, which clears WCAG AA for body text in that pairing.

In RGB space #3F9491 is a clear variant of CSS steel blue — about 40 units away from #4682B4. 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 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.

Darkening Shades

Lightening Shades