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Blue - online puzzles

70Port on the island of Procida (Italy)solved 2,507 times
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135Map, compass and magnifying glasssolved 2,507 times
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66Beach at La Manga Peninsula (Spain)solved 2,481 times
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80Sugarloaf Mountain (Brazil)solved 2,479 times
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255Muffinssolved 2,476 times
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35Bay in the town of Bogliasco (Italy)solved 2,475 times
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60San Andrés and Providencia (Colombia)solved 2,474 times
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56Boat on the Beach in El-Nido (Philippines)solved 2,473 times
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70Palm branches sheltersolved 2,472 times
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48View of fishing village of Reine (Norway)solved 2,472 times
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30baublessolved 2,469 times
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48picssolved 2,461 times
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Kul Sharif Mosque (Russia) puzzle online from photo
96Kul Sharif Mosque (Russia)solved 2,455 times
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chicory flower puzzle online from photo
63chicory flowersolved 2,452 times
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Old town in Tallin (Estonia) puzzle online from photo
60Old town in Tallin (Estonia)solved 2,440 times
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Palace of the Prince of Monaco puzzle online from photo
117Palace of the Prince of Monacosolved 2,403 times
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Cathedral in Florence (Italy) puzzle online from photo
40Cathedral in Florence (Italy)solved 2,403 times
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Ha Long Bay (Vietnam) puzzle online from photo
48Ha Long Bay (Vietnam)solved 2,402 times
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Moored boats online puzzle
88Moored boatssolved 2,399 times
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Columbia River Gorge (USA) puzzle online from photo
35Columbia River Gorge (USA)solved 2,399 times
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cosmos puzzle online from photo
15cosmossolved 2,398 times
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Camellia flower online puzzle
88Camellia flowersolved 2,389 times
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Sandy beach (Maldives) online puzzle
35Sandy beach (Maldives)solved 2,388 times
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Region of Big Sur in California (USA) online puzzle
48Region of Big Sur in California (USA)solved 2,385 times
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Mexican blankets puzzle online from photo
228Mexican blanketssolved 2,381 times
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Colorful town of Vernazza (Italy) online puzzle
70Colorful town of Vernazza (Italy)solved 2,381 times
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Dolphin online puzzle
24Dolphinsolved 2,376 times
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Beach on Roatan (Honduras) online puzzle
70Beach on Roatan (Honduras)solved 2,367 times
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Colorful buildings in Burano (Italy) puzzle online from photo
216Colorful buildings in Burano (Italy)solved 2,366 times
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White-red tulips puzzle online from photo
54White-red tulipssolved 2,356 times
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Maine Coon cat online puzzle
35Maine Coon catsolved 2,352 times
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Glass counter in the confectionery online puzzle
35Glass counter in the confectionerysolved 2,350 times
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Rings puzzle online from photo
112Ringssolved 2,348 times
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Seagulls in flight puzzle online from photo
70Seagulls in flightsolved 2,336 times
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Pitts S-2B online puzzle
24Pitts S-2Bsolved 2,335 times
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Clock tower in Graz (Austria) puzzle online from photo
70Clock tower in Graz (Austria)solved 2,334 times
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Cupecoy Beach on the island of Saint Martin (Saint Martin) puzzle online from photo
35Cupecoy Beach on the island of Saint Martin (Saint Martin)solved 2,332 times
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Pirogue on the beach (Madagascar) online puzzle
63Pirogue on the beach (Madagascar)solved 2,315 times
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Water taxis on Poros (Greece) puzzle online from photo
30Water taxis on Poros (Greece)solved 2,312 times
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gallery online puzzle
60gallerysolved 2,308 times
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Bags online puzzle
216Bagssolved 2,296 times
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Christmas tree balls online puzzle
35Christmas tree ballssolved 2,296 times
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Toyota Hybrid X Concept online puzzle
24Toyota Hybrid X Conceptsolved 2,293 times
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Town of Vernazza in Cinque Terre region (Italy) puzzle online from photo
77Town of Vernazza in Cinque Terre region (Italy)solved 2,292 times
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Canal in Otaru (Japan) puzzle online from photo
54Canal in Otaru (Japan)solved 2,277 times
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Bird’s eye view of Quito (Ecuador) puzzle online from photo
54Bird’s eye view of Quito (Ecuador)solved 2,275 times
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Victorian houses in Alamo Square (USA) puzzle online from photo
78Victorian houses in Alamo Square (USA)solved 2,264 times
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colored hubcaps and rims online puzzle
112colored hubcaps and rimssolved 2,256 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.