Brand
So_ is the SoCLI mark. The rounded square is the terminal. So, in Geist Mono Bold, is the name. The capsule on that same baseline is the cursor.
The square we ship is black, with So and the cursor in #e7e9ea, on a white ground. Twelve pixels of that ground stay empty around the square.
Color
The square is black or white. The ground behind it is white, black, or clear. The cursor matches So, or it takes the product blue: #1d9bf0 on a black square and #1a8cd8 on a white one.
Permutations
Put the black square on a light ground and the white square on a dark ground. A square the same color as its ground is included, and it will not read at a glance. The checkerboard stands in for a clear ground. It is not part of the mark.
Sizes
The same black square at 16, 32, and 64 pixels, with 12 pixels of white around each one. At 16 the o and the cursor still separate.
Type
This page is set in Geist. The letters inside the mark stay Geist Mono Bold. Geist is the text face. Geist Mono is the terminal face, which is why So is mono even when the sentence around it is not.