#EFFC3B Color
#EFFC3B is rgb(239, 252, 59) in RGB and hsl(64, 97%, 61%) in HSL. The closest CSS named color is Yellow. Black text is most readable on this background.
#EFFC3B
HEX
#EFFC3BRGB
rgb(239, 252, 59)HSL
hsl(64, 97%, 61%)HSV
hsv(64, 77%, 99%)OKLCH
oklch(95.1% 0.198 113.6)CMYK
cmyk(5%, 0%, 77%, 1%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #EFFC3B background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.13:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text18.66:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #EFFC3B based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #EFFC3B, useful for hover states, backgrounds, and text variants.