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  2. Ultramarine - Wikipedia

    en.wikipedia.org/wiki/Ultramarine

    Ultramarine is a deep blue color pigment which was originally made by grinding lapis lazuli into a powder. [2] Its lengthy grinding and washing process makes the natural pigment quite valuable—roughly ten times more expensive than the stone it comes from and as expensive as gold.

  3. List of colors by shade - Wikipedia

    en.wikipedia.org/wiki/List_of_colors_by_shade

    Achromatic grays are colors between black and white (without chroma). Chromatic grays can be thought as achromatic grays mixed with warm hues such as yellow (warm grays) or cool hues such as azure (cool grays). This gray color template includes both achromatic and chromatic grays.

  4. List of colors (alphabetical) - Wikipedia

    en.wikipedia.org/wiki/List_of_colors_(alphabetical)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 14 December 2024. For other color lists, see Lists of colors. This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "List of colors" alphabetical ...

  5. Payne's grey - Wikipedia

    en.wikipedia.org/wiki/Payne's_grey

    Payne's grey is a dark blue-grey colour used in painting. Originally a mixture of iron blue ( Prussian blue ), yellow ochre and crimson lake , [ 3 ] Payne's grey now is often a mixture of blue ( ultramarine , phthalocyanine , or indigo ) and black, [ 4 ] [ 5 ] or of ultramarine and burnt sienna .

  6. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Ultramarine blue: RAL 5003: Sapphire blue: RAL 5004: Black blue: RAL 5005: Signal blue: RAL 5007: Brilliant blue: RAL 5008: Grey blue: RAL 5009: Azure blue: RAL 5010: Gentian blue: U8 line of the Berlin U-Bahn: RAL 5011: Steel blue: RAL 5012: Light blue: U7 line of the Berlin U-Bahn: RAL 5013: Cobalt blue: Deutsche Bundesbahn express ...

  7. Shades of blue - Wikipedia

    en.wikipedia.org/wiki/Shades_of_blue

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Variety of the color blue For other uses, see Shades of Blue (disambiguation). "Shade of Blue" redirects here. For the song by Black Rebel Motorcycle Club, see Shade of Blue (song). For the R&B/funk band, see Shade of Blue (band). Blue Wavelength 440–490 nm Common connotations ...

  8. Blue pigments - Wikipedia

    en.wikipedia.org/wiki/Blue_pigments

    Copper phthalocyanine ("phthalo blue") is a synthetic blue pigment frequently used in paints, inks, and dyes. It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalis and acids. It has the appearance of a blue powder, insoluble in most solvents including ...

  9. Color theory - Wikipedia

    en.wikipedia.org/wiki/Color_theory

    Warm colors are often said to be hues from red through yellow, browns, and tans included; cool colors are often said to be the hues from blue-green through blue violet, most grays included. There is a historical disagreement about the colors that anchor the polarity, but 19th-century sources put the peak contrast between red-orange and greenish ...