You have stumbled into a very "subjective" area and will probably get variable answers. I would say the first is not pink, in fact, I would call all three Carmine. Just my 2 cents.
Now that the colors on your images are better, I agree with Sean that all three are from the #250 group.
Note that the Scott US Specialized lists shades for #250:
#250 = carmine
#250a = rose
#250b = scarlet
As they appear on my monitor, I would say that you have (from top to bottom): rose, carmine and scarlet.
I think Michael hit that one out of the park.
One problem with these issues is the various shades that the stamps are found. The primary colors are also close to each other, and it is difficult to differentiate the colors on a computer monitor.
Scott #248 - 250 (left to right):
re: ID of US 248-250
You have stumbled into a very "subjective" area and will probably get variable answers. I would say the first is not pink, in fact, I would call all three Carmine. Just my 2 cents.
re: ID of US 248-250
Now that the colors on your images are better, I agree with Sean that all three are from the #250 group.
Note that the Scott US Specialized lists shades for #250:
#250 = carmine
#250a = rose
#250b = scarlet
As they appear on my monitor, I would say that you have (from top to bottom): rose, carmine and scarlet.
re: ID of US 248-250
I think Michael hit that one out of the park.