Hi, i just wondering what is the difference about that? example : #fff with #ffffff it will show the same color at the end there's involving RGB or CMYK? but i don't think so
The triplet is still technically hexadecimal but it is just a shortcut. All it does is repeat each of the values and use that for the RGB. #333 becomes #333333, #abc becomes #aabbcc etc. I think a the reasons for using this, very minor space savings and values of R, G and B.
No, just test it yourself and you will see. #333 is #303030 If you would do color: #fff and this would be #0f0f0f then you could not see much on black background ... but the color of the font is white.