The main difference between Mustard and Sand is brightness and saturation: both are yellow shades, but they share similar brightness and Mustard is more saturated. Mustard (#FFDB58) has an HSL of 47°, 100%, 67%, whereas Sand (#C2B280) sits at 45°, 35%, 63%.
Mustard (#FFDB58) is a light, vivid yellow with a warm undertone — it feels airy, soft, approachable and bright, energetic, eye-catching.
Sand (#C2B280) is a light, muted yellow with a warm undertone — it feels airy, soft, approachable and subdued, sophisticated.
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.