My picture oil.

絵はどの大きさは何号ですか？海だからM２０号ですか？でもMではないような　F３０号くらいかな？ヨットもあって雰囲気がありますね。右上は丘でしょうか？色彩のグラデーションが素敵です。空の　青は何色を使っているのだすか？ぜひともお教えくださいませ。

いま　風景画の空で苦労しているので是非空に使った絵の具の色が知りたいんです。お願いします。

Hi, Maciej. Impressive paintinng!
SISDAD asks you some questions.
1) What size is this oil painting? Is it something like F30?
2) What kind of blue color do you paint on the sky?
He is troubled with color selection for the sky in his landscape painting.

Thank SISI_DAD and Masa.
I give dimensions in the centimeter 40 cm x 61 cm. Color violet+outremer applied for the strengthener contrast and terror the ocean. Color is important, this direction is called colorysm. In Poland establish the association sea painters. In Japan is such? Ask for the contact.

Thank you Maciej and masa,
My wife wrote the question. She struggles with painting a blue sky view.
http://photoxp.daifukuya.com/exec/pentax/80907

I cannot undetstand "outremer". Is it an oil color? or a method? May I ask you what color do you use if you draw the blue sky?

SISI_DAD
Usually use ultramarine deep (bleu oltremare scuro) + violet+ blanc titane + napoli yellow reddish. Different proportions.

Thank you Maciej,

I think you may suggest that ultramarine deep over violet, over yellow reddish or over (with) titanium white will make gradation of the blue sky. I will try.