#303B88 Color

#303B88 is rgb(48, 59, 136) in RGB and hsl(233, 48%, 36%) in HSL. The closest CSS named color is DarkSlateBlue. White text is most readable on this background.

#303B88

HEX#303B88

RGBrgb(48, 59, 136)

HSLhsl(233, 48%, 36%)

HSVhsv(233, 65%, 53%)

OKLCHoklch(38.9% 0.128 272.8)

CMYKcmyk(65%, 57%, 0%, 47%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #303B88 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text9.97:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text2.11:1AA normal ✗AA large ✗AAA normal ✗

Color Harmonies

Colors that pair well with #303B88 based on color wheel relationships. Click any swatch for its full breakdown.

Base#303B88 Complementary#887E30 Analogous#306688 Analogous#523088 Triadic#88303A Triadic#3A8830

Tints & Shades

Lighter tints and darker shades of #303B88, useful for hover states, backgrounds, and text variants.

Tints

#3C49AA #515FC2 #737ECE #929AD9 #B4B9E4 #D5D9F0

Shades

#293275 #242C66 #1D2353 #181D44 #111531 #0C0F22

Use #303B88 in Our Tools

Hex to RGB Hex to HSL Hex to CMYK Hex to Pantone RGBA to Hex