The main difference between Mustard and Rust is hue — Mustard is a warm yellow, while Rust is a warm orange. Mustard and Rust are often confused but have distinct differences in hue, saturation, and tone. Mustard (#FFDB58) and Rust (#B7410E) 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.
Mustard is more saturated (100% HSL vs 86%) so it reads as bolder and more memorable at logo scale, while Rust can feel washed out when printed small.
Rust hits a 5.56:1 WCAG contrast against white — safer for text-heavy interfaces — where Mustard only reaches 1.35:1 and risks failing AA at small body sizes.
Mustard is a warm tone that flatters spring/summer collections and warmer skin undertones, while Rust leans warmer and is better suited to autumn/winter layering.
Rust is the more muted of the two (86% saturation) and sits more calmly on large wall surfaces, while Mustard's higher chroma can overwhelm a room when used beyond accent pieces.
Mustard (#FFDB58) is a light, vivid yellow with a warm undertone — it feels airy, soft, approachable and bright, energetic, eye-catching.
Rust (#B7410E) is a dark, vivid orange with a warm 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.