Where does “blaw” come from?

blaw (Sranan Tongo) comes from Dutch blauw, from Middle Dutch blau, from Old Dutch blāo, from Proto-West Germanic blāu, from Proto-Germanic blēwaz, from Proto-Indo-European bʰlēw- — yellow, blond, grey.

blaw (Sranan Tongo): blue

Definitions

blue

Ancestry of “blaw”, step by step

Step	Language	Word	Meaning
1	Dutch	blauw	blue; visibly bruised, as in blauwe plek 'a...
2	Middle Dutch	blau	blue; the colour blue
3	Old Dutch	blāo	blue
4	Proto-West Germanic	blāu	blue
5	Proto-Germanic	blēwaz	blue; a dark bluish or grey colour, black
6	Proto-Indo-European	bʰlēw-	yellow, blond, grey

Every word from Proto-Indo-European bʰlēw- →Every word from Proto-Germanic blēwaz →Every word from Proto-West Germanic blāu →