#3F50BF Hex Color
Cool indigo with energetic clarity

Strong and saturated, this dark indigo carries a cool blue-violet cast with enough lightness to stay clear and energetic. The hex code is #3f50bf. Use it as a supporting tone for calls to action, large type, or creative branding, especially beside warm ivory or muted gold. White text reaches about 6.7:1 contrast, suitable for WCAG AA body text.
Questions about #3f50bf
What is #3f50bf in RGB, HSL and CMYK?
In RGB, #3f50bf is rgb(63, 80, 191), in HSL hsl(232, 50%, 50%) and in CMYK 67%, 58%, 0%, 25%.
What colors pair well with #3f50bf?
Warm ivory and muted gold pair especially well with #3f50bf, balancing its cool blue-violet cast with gentle warmth and giving calls to action or branding a refined setting without dulling its energy.
Does #3f50bf read as a warm or cool color?
The #3f50bf hex color reads cool because its saturated blue base is shifted toward violet, creating a crisp, energetic impression rather than a warm or earthy one. Pair it with warm neutrals when you want more balance.
Is #3f50bf readable on white or black?
#3f50bf has a 6.74:1 contrast ratio on white and 3.11:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it works only for large text (24px, or 18.5px bold). Try other pairs in the contrast checker.