Color: From Hexcodes to Eyeballs

This post is also available in Russian: Цвет: от шестнадцатеричных кодов до глаза, and Japanese: 色:ヘキサコードから眼球まで. Why do we perceive background-color: #9B51E0 as this particular purple? This is one of those questions where I thought I'd known the answer for a long time, but as I inspected my understanding, I realized there were pretty significant gaps.

Tim Sullivan

Source: Color: From Hexcodes to Eyeballs