#183F4E Color
#183F4E is rgb(24, 63, 78) in RGB and hsl(197, 53%, 20%) in HSL. The closest CSS named color is DarkSlateGray. White text is most readable on this background.
#183F4E
HEX
#183F4ERGB
rgb(24, 63, 78)HSL
hsl(197, 53%, 20%)HSV
hsv(197, 69%, 31%)OKLCH
oklch(34.7% 0.051 226.4)CMYK
cmyk(69%, 19%, 0%, 69%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #183F4E background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text11.29:1AA normal ✓AA large ✓AAA normal ✓
TextBlack text1.86:1AA normal ✗AA large ✗AAA normal ✗
Color Harmonies
Colors that pair well with #183F4E based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #183F4E, useful for hover states, backgrounds, and text variants.