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Blue - online puzzles

112colored hubcaps and rimssolved 2,248 times
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234Vancouver (Canada)solved 2,246 times
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108Caribbean beachsolved 2,244 times
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48Lake Tahoesolved 2,241 times
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66Puerto Madero in Buenos Aires (Argentina)solved 2,238 times
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15Happy Wednesday!solved 2,223 times
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54Port in Portofino (Italy)solved 2,222 times
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112Boats with the view on the port in Gallipoli (Italy)solved 2,219 times
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63For winter days ...solved 2,211 times
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60Boats in a harbor with Oslo city hall in the background (Norway)solved 2,208 times
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104Narrow street in Mali Lošinj (Croatia)solved 2,208 times
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54Panorama of Helsinki (Finland)solved 2,208 times
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54Lanikai Beach (Hawaii, USA)solved 2,204 times
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35Capo Bianco Beach on Elba (Italy)solved 2,203 times
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36Yachts on Jeziorak Lake (Poland)solved 2,201 times
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84Vasessolved 2,194 times
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54Luxurious yachtssolved 2,193 times
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112Jigsaw Puzzlesolved 2,184 times
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54Meadowsolved 2,182 times
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117Niue (New Zealand)solved 2,174 times
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60Porcelainsolved 2,172 times
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20Fish in the Caribbean Seasolved 2,166 times
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Tiger online puzzle
48Tigersolved 2,165 times
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Clocks puzzle online from photo
80Clockssolved 2,164 times
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Pont Alexandre III (France) online puzzle
63Pont Alexandre III (France)solved 2,139 times
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Johnnie Fox's Pub (Ireland) online puzzle
54Johnnie Fox's Pub (Ireland)solved 2,136 times
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Berlin panorama at sunset (Germany) puzzle online from photo
70Berlin panorama at sunset (Germany)solved 2,123 times
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Fishing town of Manarola (Italy) puzzle online from photo
150Fishing town of Manarola (Italy)solved 2,119 times
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Basilica of Saint Mary of Health in Venice (Italy) online puzzle
63Basilica of Saint Mary of Health in Venice (Italy)solved 2,066 times
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Stained glass windows puzzle online from photo
72Stained glass windowssolved 2,063 times
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Panorama of Sibiu (Romania) online puzzle
150Panorama of Sibiu (Romania)solved 2,061 times
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Crisp Point Light (USA) online puzzle
70Crisp Point Light (USA)solved 2,061 times
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Sicilian town (Italy) puzzle online from photo
60Sicilian town (Italy)solved 2,058 times
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Cathedral Cove (New Zealand) puzzle online from photo
54Cathedral Cove (New Zealand)solved 2,057 times
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stones online puzzle
70stonessolved 2,057 times
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Panorama of Bogliasco (Italy) puzzle online from photo
88Panorama of Bogliasco (Italy)solved 2,049 times
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Alaskan Malamute dog puzzle online from photo
30Alaskan Malamute dogsolved 2,042 times
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round online puzzle
228roundsolved 2,036 times
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Lupine on the shore of Tekapo Lake (New Zealand) online puzzle
70Lupine on the shore of Tekapo Lake (New Zealand)solved 2,030 times
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Santa Maria del Fiore Cathedral in Florence (Italy) puzzle online from photo
160Santa Maria del Fiore Cathedral in Florence (Italy)solved 2,010 times
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Narrow-gauge locomotive L30H puzzle online from photo
77Narrow-gauge locomotive L30Hsolved 1,999 times
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In English colors ... online puzzle
224In English colors ...solved 1,999 times
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Rosettes online puzzle
20Rosettessolved 1,998 times
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Concrete shoes on the island of Mainau (Germany) puzzle online from photo
77Concrete shoes on the island of Mainau (Germany)solved 1,991 times
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Banpo Bridge in Seoul (South Korea) puzzle online from photo
70Banpo Bridge in Seoul (South Korea)solved 1,990 times
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Cakes puzzle online from photo
28Cakessolved 1,986 times
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Baiterek, the symbol of Astana (Kazakhstan) online puzzle
30Baiterek, the symbol of Astana (Kazakhstan)solved 1,984 times
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The fog bell of Chersonesos (Ukraine) online puzzle
70The fog bell of Chersonesos (Ukraine)solved 1,980 times
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Online puzzle Blue

Blue

Blue is one of the three primary colours in the RYB colour model (traditional colour theory), as well as in the RGB (additive) colour model. It lies between violet and cyan on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called the Tyndall effect explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.

Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain. In the Middle Ages, European artists used it in the windows of cathedrals. Europeans wore clothing coloured with the vegetable dye woad until it was replaced by the finer indigo from America. In the 19th century, synthetic blue dyes and pigments gradually replaced organic dyes and mineral pigments. Dark blue became a common colour for military uniforms and later, in the late 20th century, for business suits. Because blue has commonly been associated with harmony, it was chosen as the colour of the flags of the United Nations and the European Union.In the United States and Europe, blue is the colour that both men and women are most likely to choose as their favourite, with at least one recent survey showing the same across several other countries, including China, Malaysia, and Indonesia. Past surveys in the US and Europe have found that blue is the colour most commonly associated with harmony, confidence, masculinity, knowledge, intelligence, calm, distance, infinity, the imagination, cold, and sadness.