#3F3399 Color
#3F3399 is rgb(63, 51, 153) in RGB and hsl(247, 50%, 40%) in HSL. The closest CSS named color is DarkSlateBlue. White text is most readable on this background.
#3F3399
HEX
#3F3399RGB
rgb(63, 51, 153)HSL
hsl(247, 50%, 40%)HSV
hsv(247, 67%, 60%)OKLCH
oklch(40% 0.159 281.8)CMYK
cmyk(59%, 67%, 0%, 40%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #3F3399 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text9.79:1AA normal ✓AA large ✓AAA normal ✓
TextBlack text2.14:1AA normal ✗AA large ✗AAA normal ✗
Color Harmonies
Colors that pair well with #3F3399 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #3F3399, useful for hover states, backgrounds, and text variants.