You should have an air adjustment on your gas range. I've never messed with mine, so I'm not sure what it looks like/works like, but I know I have it on my gas range at home.
Usually there's a square hole in the gas line to the burner, with a curved metal piece with a hole in it around the hole in the gas line. Then there's usually a screw. You loosen the screw and rotate the metal piece to increase/decrease the size of the hole in the gas line. So you'd loosen the screw and increase/decrease the size until you get blue flames, then tighten the screw.
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10