#3F558D Color
#3F558D is rgb(63, 85, 141) in RGB and hsl(223, 38%, 40%) in HSL. The closest CSS named color is DarkSlateBlue. White text is most readable on this background.
#3F558D
HEX
#3F558DRGB
rgb(63, 85, 141)HSL
hsl(223, 38%, 40%)HSV
hsv(223, 55%, 55%)OKLCH
oklch(45.9% 0.096 266.5)CMYK
cmyk(55%, 40%, 0%, 45%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #3F558D background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text7.25:1AA normal ✓AA large ✓AAA normal ✓
TextBlack text2.9:1AA normal ✗AA large ✗AAA normal ✗
Color Harmonies
Colors that pair well with #3F558D based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #3F558D, useful for hover states, backgrounds, and text variants.