Uniform Color
 

If the visiting team shows up wearing dark blue jersey and home is wearing dark blue jersey. What happens if visitors have no other jersey and the home team can not change into white before the game starts?

Jersey Color
 

Option 1
I would wait to start the game until the home team changes there jerseys.

Option 2
I guess just play the game if the jerseys are not the same dark color.

Follow option 1. I would also file a report with the state association.

If both sides are wearing a "dark blue jersey", could you even officiate it, even if the teams agreed to play it? Most of the plays, there'd be no problem, but there are calls where all you saw was an arm sticking out of that color uniform.

I'm not playing the game, and sending a report to the state association. The game could not be played, because both teams had uniforms of similar colors. There were no other uniforms available.

Color uniform
 

Visitors are responsible for wearing white.

That is true. That said, the rulebook says that "if there is doubt, the referee may require players of the home team to change jerseys". In this situation, I would delay the game to allow the home team to change into contrasting jerseys. Blue vs blue is a mess. Blue vs red isn't exactly legal, but at least the colors would be contrasting.

It's a shame that NFHS does not have a specific penalty like NCAA does for illegal jerseys. Take a penalty on each half's kickoff and lose a timeout every quarter you play with illegal jerseys is a strong incentive to have legal jerseys.

What do you make of rule 3-4-1c and 10-6-4? In Illinois, play the game. If this is a varsity game, and home team doesn’t have white jerseys, penalize the head coach. Unless visiting team has some white jerseys CB 3.4.1 Sit. A.

Are you referring to basketball rules? I understand your mindset, but if no alternative jerseys are available for either team (white jerseys, practice jerseys of a different color, vests of a different color), the game can't be played, because it is not possible to tell one blue team apart from another in the heat of battle.

The visitors should bring white jerseys with them to avoid this situation, or else the home team should have spare white jerseys on hand. Either way, blue vs blue should never happen.

My bad. Thought this was about basketball.