Chameleon in The Elder Scrolls IV: Oblivion is a magic effect from the Illusion school that makes the user partially invisible by blending them with their surroundings for a set duration. The effect reduces the range at which NPCs and creatures can detect you visually, making you increasingly transparent as the percentage of Chameleon increases, with 100% Chameleon rendering you completely invisible

. Unlike traditional invisibility, Chameleon does not break when you interact with objects, attack, or cast spells, allowing you to perform actions like stealing or fighting without losing the effect. However, it does not make you silent, so enemies can still detect you by sound if your stealth is poor or if you wear heavy boots

. Chameleon effects stack, so wearing multiple pieces of gear enchanted with Chameleon or combining spells and enchanted items can increase the total percentage. At 100% Chameleon, you become visually non-existent and nearly undetectable, able to move freely and perform almost any action without being noticed by NPCs, except for scripted interactions or guards trying to arrest you. Values above 100% do not provide additional benefits

. To achieve 100% Chameleon, players typically enchant five pieces of armor or jewelry with 20% Chameleon each using Grand Souls, or combine enchanted gear with spells and potions. Some unique items and Sigil Stones also provide Chameleon enchantments that help reach this threshold

. In summary, Chameleon makes you partially to fully invisible depending on the percentage, allowing stealthy gameplay with the advantage of maintaining the effect while interacting with the environment, unlike standard invisibility spells which break upon interaction