The mark carries its own colour and works on either ground. It is never recoloured, never outlined, and never placed on a background that competes with the orange.
Colour
Five values, and only one of them is loud
Flame
#FD6301
The mark, and the one accent on the site.
Ember
#D43901
The darker band inside the mark.
Glow
#FD8937
The inner band.
Ground
#08090B
Page background.
Paper
#F4F2EF
Light sections.
Usage
Four rules
Editorial use needs no permission. These exist so the result is legible, not to make anyone ask.
Don't recolour it
The mark is orange. A monochrome version does not exist because the colour is doing the identifying.
Don't stretch it
It has a fixed aspect ratio. Scale it, never distort it — and never place it on a non-square canvas without letterboxing.
Leave it room
Clear space of at least half the mark's width on every side.
Write it as one word
“OpenKol” — one word, capital O and capital K, no space and no hyphen. Not “Open Kol”, “OpenKOL” or “openkol”, except in a URL or a filename where lowercase is the convention anyway.