#557DB9 Color

#557DB9 is rgb(85, 125, 185) in RGB and hsl(216, 42%, 53%) in HSL. The closest CSS named color is SteelBlue. Black text is most readable on this background.

#557DB9

HEX#557DB9

RGBrgb(85, 125, 185)

HSLhsl(216, 42%, 53%)

HSVhsv(216, 54%, 73%)

OKLCHoklch(58.7% 0.103 258.3)

CMYKcmyk(54%, 32%, 0%, 27%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #557DB9 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text4.18:1AA normal ✗AA large ✓AAA normal ✗

TextBlack text5.02:1AA normal ✓AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #557DB9 based on color wheel relationships. Click any swatch for its full breakdown.

Base#557DB9 Complementary#B99155 Analogous#55AFB9 Analogous#5F55B9 Triadic#B9557D Triadic#7DB955

Tints & Shades

Lighter tints and darker shades of #557DB9, useful for hover states, backgrounds, and text variants.

Tints

#6B8EC2 #84A1CD #9AB2D6 #B3C5E0 #C9D6E9 #E2E9F3

Shades

#446BA7 #3A5B8D #2F4B74 #253A5B #1B2A41 #101A28

Use #557DB9 in Our Tools

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