The main difference between Brown and Grey is hue — Brown is a warm red, while Grey is a neutral gray. Brown (#A52A2A) has an HSL of 0°, 59%, 41%, whereas Grey (#808080) sits at 0°, 0%, 50%.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Brown is more saturated (59% HSL vs 0%) so it reads as bolder and more memorable at logo scale, while Grey can feel washed out when printed small.
Brown hits a 7.08:1 WCAG contrast against white — safer for text-heavy interfaces — where Grey only reaches 3.95:1 and risks failing AA at small body sizes.
Brown is a warm tone that flatters spring/summer collections and warmer skin undertones, while Grey leans cooler and is better suited to autumn/winter layering.
Grey is the more muted of the two (0% saturation) and sits more calmly on large wall surfaces, while Brown's higher chroma can overwhelm a room when used beyond accent pieces.
Brown (#A52A2A) is a medium, moderately saturated red with a warm undertone — it feels balanced, versatile and balanced in intensity.
Grey (#808080) is a medium, near-neutral gray with a neutral undertone — it feels balanced, versatile and desaturated and restrained.
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.