All colours
698 colours written up so far, best known first, and 1,292 named values in the swatch book. 90 more are on the list to be written.
#0000FF
Blue
A primary colour seen in the sky and sea, used since ancient times in art and dyeBasic colour

Blue
Lapis lazuli
A deep blue stone prized for jewellery and the source of ultramarine pigmentColour named from nature 路 馃嚘馃嚝 Afghanistan +5

#6A5DFF
Indigo
A deep blue named for the dye once exported from IndiaNamed shade 路 馃嚠馃嚦 India +5
Blue
Azurite
A deep blue copper mineral once prized as a pigment and gemstonePigment 路 馃嚝馃嚪 France +5
Blue
Woad
A blue dye once vital to Europe's textile trade, made from the leaves of a flowering plantDye 路 馃嚝馃嚪 France +3

Blue
Indigo
A deep blue dye from plants, now mostly made synthetically and known for colouring denimDye 路 馃嚠馃嚦 India +5

Blue
Methylene blue
A synthetic blue dye and medicine first made in 1876Dye
#003153
Prussian blue
A deep blue pigment first made in Berlin in the early 1700sPigment 路 馃嚡馃嚨 Japan

#120A8F
Ultramarine
A deep blue pigment once made from lapis lazuli, prized for centuries in artPigment 路 馃嚘馃嚝 Afghanistan +2
#007FFF
Azure
A clear sky blue, halfway between blue and cyan on the colour wheelNamed shade 路 馃嚠馃嚬 Italy +2

#87CEEB
Sky blue
A light blue named for the colour of a clear daytime skyNamed shade 路 馃嚘馃嚪 Argentina +5
Blue
Haematoxylin
A natural dye from logwood, best known for staining cell nuclei in histologyDye 路 馃嚨馃嚟 Philippines
#0047AB
Cobalt blue
A strong, stable blue pigment made from cobalt and alumina since the early 1800sPigment 路 馃嚝馃嚪 France +3
#000080
Navy blue
A deep blue shade named for the uniforms of the Royal NavyNamed shade 路 馃嚭馃嚫 United States +2
#1034A6
Egyptian blue
A vivid blue pigment first made in ancient Egypt from copper, lime, and sandPigment 路 馃嚜馃嚞 Egypt +5
#007BA7
Cerulean
A blue-green colour once made from cobalt stannate and linked with the skyNamed shade 路 馃嚞馃嚙 United Kingdom
#002366
Royal blue
A strong, deep blue linked with royalty and national flagsNamed shade 路 馃嚝馃嚪 France +4
#191970
Midnight blue
A deep blue that recalls the sky late at night under moonlightNamed shade

#73C2FB
Maya blueazul maya
A vivid turquoise blue pigment made by the ancient Maya and AztecsPigment 路 馃嚥馃嚱 Mexico +1
#1C39BB
Persian blue
A vivid blue inspired by Persian tiles and lapis lazuliNamed shade 路 馃嚠馃嚪 Iran +1
#7DF9FF
Electric blue
A bright blue named for the glow of electrical discharges and lightningNamed shade
Blue
Tekhelet转职旨讻值诇侄转
A blue dye from sea snails, central to ancient Jewish ritual and traditionDye 路 馃嚠馃嚤 Israel +2
#0033CC
International Klein Blue
A deep blue made famous by Yves Klein's art and a special synthetic binderNamed shade 路 馃嚝馃嚪 France
#89CFF0
Baby blue
A soft pastel blue first named in English in 1892Named shade 路 馃嚘馃嚪 Argentina
#B0E0E6
Powder blue
A pale blue once made from powdered cobalt glass, now a standard paint and web colourNamed shade

#318CE7
Bleu de France
A vivid blue long linked with France and its national identityNamed shade 路 馃嚝馃嚪 France

#2E5090
YInMn Blue
A modern, stable blue pigment made from yttrium, indium and manganese oxidesPigment 路 馃嚭馃嚫 United States +1
Blue
Bleu celeste
A pale blue used as a rare heraldic colour, lighter than traditional azureNamed shade
#6699CC
Blue-gray
A cool-toned mix of blue and grey seen in nature, art, and uniformsNamed shade

#4682B4
Steel blue
A subdued blue-grey shade named for the colour of blued steelNamed shade
#4B61D1
Savoy blueblu Savoia
A bright blue between peacock blue and periwinkle, a symbol of Italy since the Middle AgesNamed shade 路 馃嚠馃嚬 Italy
#6050DC
Majorelle Blue
A vivid deep blue named for artist Jacques Majorelle and his Marrakesh gardenNamed shade 路 馃嚥馃嚘 Morocco
Blue
Han purple and Han blue
Ancient synthetic pigments of blue and purple, first made in early ChinaPigment 路 馃嚚馃嚦 China
#86A1A9
Tourmaline喽о窛喽秽陡喽洁穵喽洁窉
A mineral group prized for its rainbow of gemstone coloursColour named from nature 路 馃嚤馃嚢 Sri Lanka +5
#3E8EDE
Tufts Blue
A clear blue used as the official colour of Tufts UniversityNational or team colour 路 馃嚭馃嚫 United States
Blue
Lazurite
A deep blue mineral that gives lapis lazuli its colourColour named from nature 路 馃嚘馃嚝 Afghanistan +2
#189BCC
Blue (Weezer Blue Album cover)
The solid blue background from Weezer鈥檚 1994 debut album coverNamed shade

#6495ED
Cornflower blue
A clear, medium-light blue named for the cornflower and prized in sapphiresNamed shade
#1C05B3
Trypan blue
A synthetic blue azo dye used to stain dead cells in science and medicineDye

Blue
Color of water
The natural blue-cyan tint seen in pure water and large bodies like lakes and oceansColour named from nature
Blue
Vair
A blue and white heraldic fur pattern based on squirrel peltsHeraldic colour
#ADD8E6
Light blue
A pale blue shade found between blue and cyan, seen in flags and daily life worldwideNamed shade 路 馃嚝馃嚪 France +5
#6082B6
Glaucous
A pale blue-grey colour seen on some plants and birdsNamed shade

#000F89
Phthalo blue
A strong, synthetic blue pigment made from copper phthalocyaninePigment 路 馃嚛馃嚜 Germany +1
#F0F8FF
Alice blue
A pale blue shade named for Alice Roosevelt, once a fashion trend in the USNamed shade 路 馃嚭馃嚫 United States
#2D68C4
UCLA Blue
A clear blue shade worn by UCLA's teams and tied to the Pacific coastNamed shade 路 馃嚭馃嚫 United States
#0014A8
Zaffre
A deep blue pigment once made by roasting cobalt orePigment
#5D8AA8
Air Force blue
A medium blue-green shade linked to air force uniforms and flagsNamed shade 路 馃嚞馃嚙 United Kingdom +3
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Azure: Marco Almbauer, CC BY-SA 3.0, source
- Bleu de France: Lars-G枚ran Lindgren Sweden, CC BY-SA 3.0, source
- Blue-gray: IlyaHaykinson, CC BY 2.0, source
- Cornflower blue: TeunSpaans, CC BY-SA 3.0, source
- Glaucous: YPLeroux, CC0, source
- Indigo: Photo by Evan Izer ( Palladian ), CC BY-SA 2.5, source
- Light blue: Yosef Ben Melamed, CC BY-SA 4.0, source
- Majorelle Blue: Bj酶rn Christian T酶rrissen, CC BY-SA 3.0, source
- Maya blue: Unknown author, Public domain, source
- Midnight blue: Kippelboy, CC BY-SA 3.0, source
- Navy blue: Official Navy Page, Public domain, source
- Persian blue: Diego Delso, CC BY-SA 4.0, source
- Phthalo blue: Smokefoot, CC BY-SA 4.0, source
- Steel blue: Richardd1970, CC BY-SA 3.0, source
- UCLA Blue: mark6mauno, CC BY-SA 2.0, source
- Tourmaline: Aurelienreys, CC BY-SA 3.0, source
- Trypan blue: Smokefoot, Public domain, source
- Tufts Blue: HereToHelp, CC BY-SA 3.0, source
- Blue (Weezer Blue Album cover): Gel Gems, Public domain, source
- YInMn Blue: Mas Subramanian, CC BY-SA 4.0, source
- Lazurite: Didier Descouens, CC BY-SA 4.0, source
- Haematoxylin: Waughd, CC BY-SA 4.0, source
- Woad: Unknown author, CC BY-SA 3.0, source
- Electric blue: User:Pslawinski, CC BY-SA 2.5, source
- Tekhelet: The original uploader was Sputnikcccp at English Wikipedia ., CC BY-SA 3.0, source
- International Klein Blue: Yves Klein, Public domain, source
- Color of water: Incredio, CC BY-SA 3.0, source
- Air Force blue: Mick, CC BY 2.0, source
- Savoy blue: El Gr谩fico, Public domain, source
- Vair: Ray eye, CC BY-SA 2.0 de, source
- Azurite: Ivar Leidus, CC BY-SA 4.0, source
- Methylene blue: Amanda Slater, Flickr user amandabhslater, CC BY-SA 2.0, source
- Ultramarine: Unknown author, Public domain, source
- Lapis lazuli: Adam Ognisty, CC BY-SA 3.0, source
- Sky blue: Gabriela Ruellan, CC0, source
- Cerulean: Stephhzz, CC BY-SA 3.0, source
- Cobalt blue: FK1954, Public domain, source
- Egyptian blue: Bairuilong, CC BY-SA 4.0, source
- Blue: NOAA-JMA, CC BY 4.0, source
- Prussian blue: Picture created by publunch, Public domain, source