How can I find the color code after the latest update? I can't find it on photoshop

Whilst discussing Hex codes -

Perhaps you are already aware that, like RGB pixel values, Hex values are not an unequivocal* way of defining colour - until the hex code is associated with an ICC document profile. 

*(L*a*b* values do provide an unequivocal colour definition)

So, if you are passing Hex codes to colleagues, you need to specify the working colour space too,

e.g. sRGB IEC61966-2.1, Adobe RGB (1998).  A specific Hex code used in sRGB will be a different colour to the same code used in Adobe RGB

I hope this helps
neil barstow, colourmanagement net - adobe forum volunteer - co-author: 'getting colour right'
google me "neil barstow colourmanagement" for lots of free articles on colour management

Ys I mean  hex code

Which colour code? Do you mean the hex code in the colour picker?

Dave