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Dark Blue Color coordinates; Hex triplet #00008B: sRGB B (r, g, b) (0, 0, 139) HSV (h, s, v) (240°, 100%, 55%) CIELCh uv (L, C, h) (15, 60, 266°) Source: X11: ISCC–NBS descriptor: Vivid blue: B: Normalized to [0–255] (byte)
Navy blue is a dark shade of the color blue. French sailor in dark blue uniform. Navy blue got its name from the dark blue (contrasted with naval white) worn by officers in the Royal Navy since 1748 and subsequently adopted by other navies around the world.
Blue is a color, the perception of which is evoked by light having a spectrum dominated by energy with a wavelength of roughly 440–490 nm. It is considered one of the additive primary colors .
Blue Sapphire Color coordinates; Hex triplet #126180: sRGB B (r, g, b) (18, 97, 128) HSV (h, s, v) (197°, 86%, 50%) CIELCh uv (L, C, h) (38, 40, 232°) Source: Pantone TPX: ISCC–NBS descriptor: Dark greenish blue: B: Normalized to [0–255] (byte)
Persian blue comes in three major tones: Persian blue proper: a bright medium blue; medium Persian blue (a medium slightly grayish blue that is slightly indigoish); and a kind of dark blue which is referred to as Persian indigo, dark Persian blue, or regimental, that is much closer to the web color indigo.
Darker shades of blue include ultramarine, cobalt blue, navy blue, and Prussian blue; while lighter tints include sky blue, azure, and Egyptian blue (for a more complete list see the List of colours).
Smalt has a deep, dark blue hue, but powder blue nowadays is a pale cobalt blue as illustrated by the examples below, which show powder blue as defined by British and Australian Standards for paint colours along with an example of one manufacturer's actual Powder Blue paint, and a consensus definition produced by an online colour names survey ...
Indigo dye is a dark blue crystalline powder that sublimes at 390–392 °C (734–738 °F). It is insoluble in water, alcohol , or ether , but soluble in DMSO , chloroform , nitrobenzene , and concentrated sulfuric acid .
Yale Blue is the dark blue color used in association with Yale University. History [ edit ] The flag in this painting of the Yale 1859 crew team is believed to be the first documented Yale Blue, though the photograph is in black and white.
Oxford Blue colour #002147. Oxford Blue is the official colour of the University of Oxford. The official Oxford branding guidelines set its definition as Pantone 282, equivalent to the hex code #002147. With a hue code of 212, this colour is a very dark tone of azure.