A circle shown in the color of black. May be used to represent anything black. Black Circle was approved as part of Unicode 4.1 in 2005 under the name "Medium Black Circle" and added to Emoji 1.0 in 2015. Can I Emoji? All emoji names are official Unicode Character Database or CLDR names. Code points listed are part of the Unicode Standard.

The yellow circle is a simple emoji that can be used to say the color yellow without having to type it. You can also use this emoji to express caution, the sun, light, or to simply use the color yellow to brighten up your message. Your heart is black, you have no soul.

A square shown in the shade of black. May be used to represent anything black. Black Large Square was approved as part of Unicode 5.1 in 2008 and added to Emoji 1.0 in 2015. Today Google has officially unveiled its full-color designs for Unicode's latest approved emojis, which include a smiley face with bags under its eyes...

The black square button emoji is a black outlined square with a white center, and can be used when chatting about your favorite shapes. The Plus emoji features a simple “plus sign” symbol in a dark, neutral color. The color purple can represent royalty, luxury, and ambition.