(Colors will vary by monitor screen as well. In addition to the most used blues, it can be fun to try a few special colors. Colors can vary substantially according to brand, as shown in the Cerulean Blues (Richeson and Gamblin) shown below. We encourage everyone to make color charts to refer to when painting. Just trust your instincts and keep trying until it WORKS!" I've had many paintings that I have repainted the sky several times changing the blue. It all depends on what other colors are in your painting. Some paintings call for a warmer Cerulean sky some for a cooler Cobalt one or some Ultramarine or combinations of all there or even other blues. "There is no real formula to choosing which blue to use in your sky. Lyrical Light 24 x 30" Oil Howard Friedland ![]() On a clear sunny day, the sky could be a light Cobalt Blue at the top of your painting and as it descends down to the horizon you might see it warm up to a light Viridian Green hue and at the point where you lost sight of the sky, it might even have a red-violet tone like a bit of Alizarin Crimson blush." Now watch the sky change temperature as you move your finger. Here is a neat way to observe the color shift: using your finger, point at the sky moving it slowly from side to side or zenith to horizon. Also, depending on the time of day, it might graduate warmer to cooler from side to side. As the sky descends slowly toward the horizon, it gets lighter and gradually warmer. How does the color transition from warmer to cooler? Notice how the sky above you, at the zenith, is a darker and purer blue. The other thing I look for is gradation in the sky. Therefore, whichever blue I use, I'll want it to harmonize with the rest of the painting. When I think about painting skies, I remember that whichever blue I use, on a clear sunny day it will influence the horizontal planes and the ground and much of the shadow color. Even Viridian Green can look bluish in certain color combinations. The key is to remember that color is relative and will look a certain way when placed next to other colors. ![]() I think of Cobalt as the purest and coolest of the blues since Ultramarine has a blue-violet cast and Cerulean has a comparatively warmer (greener) feeling. That said, I have Cobalt Blue, Ultramarine and Cerulean Blue as staples on my palette. "Skies can be any color and not just blue. ![]() Teton Grandeur 24 x 36" Oil Howard Friedland We asked two master landscape artists, Howard Friedland and George Van Hook about what they reach for when they begin to block in a sky and to show us some examples in their oil paintings. For the landscape painter, learning the characteristics of available blue pigments is essential. Changing atmospheric conditions, time of day, time of year-all can create nuanced, or sometimes dramatic, variations in the color of blue of the sky. You can click here for a list of blue hues, or open a full chart of 215 RAL Classic colours."How sweet to be a cloud floating in the blue."Īutumn Cottonwoods 12 x 16" Oil Howard Friedlandīut which blue? Painting a beautiful blue sky can be a challenge. This blue colour assortment holds another 24 excellent tones (making a total of 25 unique colour samples). On this particular hue range, in addition to 'cobalt blue', you will find hand-picked colour tones selected by RAL institute design experts. This naming system also provides additonal quality assurance preventing erroneous colour assigment due to number transposition. ![]() The name Cobalt blue actually serves as additional, auxiliary designation, making the colour easier to remember. This is why blue colours are sequentialy coded under 5xxxx, where 5 is a system code number (1: yellow, 2: orange, 3: red, 4: purple, 5: blue, 6: green, 7: grey, 8: brown and 9: white and black shades). You will notice that all of these grouped colours follow this specific designation, which is based on four-digit number in combination with the letters "RAL". This RAL 5013 Colour is presented to you as a part of blue hues assortment on the RAL Classic colour chart.
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