The main difference between Plum and Purple is brightness and saturation: both are magenta shades, but Plum is lighter and Purple is more saturated. Plum and Purple are often confused but differ in brightness, saturation, and undertone. Plum (#DDA0DD) and Purple (#800080) each have distinct characteristics and best uses.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Purple is more saturated (100% HSL vs 47%) so it reads as bolder and more memorable at logo scale, while Plum can feel washed out when printed small.
Purple hits a 9.42:1 WCAG contrast against white — safer for text-heavy interfaces — where Plum only reaches 2.07:1 and risks failing AA at small body sizes.
Plum is a warm tone that flatters spring/summer collections and warmer skin undertones, while Purple leans warmer and is better suited to autumn/winter layering.
Plum is the more muted of the two (47% saturation) and sits more calmly on large wall surfaces, while Purple's higher chroma can overwhelm a room when used beyond accent pieces.
Plum (#DDA0DD) is a light, moderately saturated magenta with a warm-leaning undertone — it feels airy, soft, approachable and balanced in intensity.
Purple (#800080) is a dark, vivid magenta with a warm-leaning undertone — it feels rich, serious, substantial and bright, energetic, eye-catching.
Text legibility depends on the contrast ratio between foreground and background. WCAG 2.1 AA requires at least 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Use these numbers to choose accessible combinations for your design.
Each color has a dedicated page with shades, tints, CSS name, pairings, and color psychology.