#EFFB04 Color
#EFFB04 is rgb(239, 251, 4) in RGB and hsl(63, 97%, 50%) in HSL. The closest CSS named color is Yellow. Black text is most readable on this background.
#EFFB04
HEX
#EFFB04RGB
rgb(239, 251, 4)HSL
hsl(63, 97%, 50%)HSV
hsv(63, 98%, 98%)OKLCH
oklch(94.7% 0.211 113.3)CMYK
cmyk(5%, 0%, 98%, 2%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #EFFB04 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.14:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text18.47:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #EFFB04 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #EFFB04, useful for hover states, backgrounds, and text variants.