Create lighter HSL variants by moving a base colour toward white.
The frame below runs the same code as this page, in the reader's own browser. Nothing is sent to us, and nothing is sent to you.
Pick a dark background and the text and panels follow it, so the frame stays readable on a dark page.
The input becomes HSL and each tint increases lightness toward one while preserving hue and saturation. The results convert back to RGB and hex.
#E74C3C
#E74C3C #ED796D #F3A69E #F9D2CE #FFFFFF
UI themes create hover surfaces, design systems build lighter backgrounds, and lessons demonstrate tinting through lightness.