A detailed comparison of #EFEF43 and #4343EF — complementary colors
background: linear-gradient(to right, #EFEF43, #4343EF);
With a contrast ratio of 5.2:1, this pair meets WCAG AA for normal text. Use Iris Tone Bright as the background and Citrine Tone Bright as text for optimal readability.
These colors have a 180\u00B0 hue difference, making them complementary. Their high contrast creates visual energy — great for call-to-action buttons, hero sections, and brand accents.