Hi
Welcome to the MedHelp forum!
Color of tongue varies from person to person and may also be affected by what you eat. Tongue can be pale, appear whitish in center, light red in color or can be mixed color-pale at places and deep pink at others. Also certain milk products sticking to it, debris on the tongue etc can make it look white.
Since I cannot examine you and know other related conditions you may be having, nor is a detailed history possible on net, I have listed the various possibilities that should be looked into. Please consult your PCP for primary examination followed by proper referral. Take care!
Also couldn't found a glosso-section so i posted on here instead
But it's a bit lighter than picture number 2