The main difference between Lemon and Butter is brightness and saturation: both are yellow shades, but Butter is lighter. Lemon and Butter are often confused but have distinct differences in hue, saturation, and tone. Lemon (#FFF44F) and Butter (#FFFAA0) each suit different design contexts — understanding their differences helps you choose the right color for your project.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Lemon is more saturated (100% HSL vs 100%) so it reads as bolder and more memorable at logo scale, while Butter can feel washed out when printed small.
Lemon hits a 1.15:1 WCAG contrast against white — safer for text-heavy interfaces — where Butter only reaches 1.08:1 and risks failing AA at small body sizes.
Butter is a warm tone that flatters spring/summer collections and warmer skin undertones, while Lemon leans warmer and is better suited to autumn/winter layering.
Lemon is the more muted of the two (100% saturation) and sits more calmly on large wall surfaces, while Butter's higher chroma can overwhelm a room when used beyond accent pieces.
Lemon (#FFF44F) is a light, vivid yellow with a warm undertone — it feels airy, soft, approachable and bright, energetic, eye-catching.
Butter (#FFFAA0) is a very light, vivid yellow with a warm undertone — it feels pale, delicate, gentle 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.