The main difference between Periwinkle and Lavender is hue — Periwinkle is a cool purple, while Lavender is a cool off-white. Periwinkle (#CCCCFF) is a soft blue-purple with a clear blue dominance, while Lavender (#E6E6FA) is a paler, more neutral purple with a whisper of blue. Periwinkle reads as 'light blue with some purple'; lavender reads as 'very pale purple with a hint of blue'.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Periwinkle is more saturated (100% HSL vs 67%) so it reads as bolder and more memorable at logo scale, while Lavender can feel washed out when printed small.
Periwinkle hits a 1.54:1 WCAG contrast against white — safer for text-heavy interfaces — where Lavender only reaches 1.23:1 and risks failing AA at small body sizes.
Lavender is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Periwinkle leans cooler and is better suited to autumn/winter layering.
Lavender is the more muted of the two (67% saturation) and sits more calmly on large wall surfaces, while Periwinkle's higher chroma can overwhelm a room when used beyond accent pieces.
Periwinkle is a pastel blue-violet named after the five-petaled Vinca flower. It has more blue in it than most people expect — equal red and green (204) with full blue (255) — which is why it often reads as a soft baby blue with a purple tilt rather than a true purple.
Lavender is a very pale, balanced purple named after the Mediterranean herb. With near-equal red and green (230) and slightly more blue (250), it's nearly a neutral light tint but the extra blue pushes it subtly toward purple. It's a quintessential 'barely there' pastel.
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.