Information about #666B81 color

#666B81 color image

Basic facts about this digital color

In the Register's classification, #666B81 belongs to the Blue Color Family, featuring Low Saturation and Light brightness. The mix behind it: rgb(102, 107, 129) — 40% red, 42% green, 50.6% blue; the print equivalent is CMYK 11 / 9 / 0 / 49. Curious how these numbers work? Read our RGB color codes guide.

#666B81 is a softly toned deep-sea blue that feels open and friendly. It is a natural fit for understated, calm designs that favor harmony over drama. In The Official Register of Color Names it is a hair away from Mist Blue (#646D7E). Its next-closest registered neighbors are Jet Gray (#616D7E) and Sunset-stone-equanimity-natalie (#656A88).

The recipe behind #666B81 is rgb(102, 107, 129), with blue as the dominant ingredient. If you plan to put text on a #666B81 background, choose white — the contrast ratio is 5.3:1 (passing WCAG AA), while black manages only 4.0:1. No one has named #666B81 so far. Register a name for it and it becomes a permanent record.

#666B81 color variations

View this color variations of tints, shades, tones and hues.

#666B81 color tints

Tints look brighter, pastel, and less intense.
#666B81

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#81869C

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#A0A4B4

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#C0C2CD

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#DFE0E6

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White

#FFFFFF

#666B81 color shades

Shades look darker, richer, and more solid.
#666B81

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#505466

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#3C3F4D

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#282A33

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#141519

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Black

#000000

#666B81 color tones

Tones looks more sophisticated and complex than base colors.
#666B81

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#6A6E80

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#6F7280

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#747680

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#797B7F

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Grey

#808080

#666B81 color hues

A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#806480

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#756480

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#6A6480

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#666B81

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#647580

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#648080

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#648075

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#666B81 color harmonies

Color harmonies are pleasing color schemes created according to their position on a color wheel.

Complementary

Complementary color schemes are made by picking two opposite colors con the color wheel. They appear vibrant near to each other.

Complementary color schemes
#666B81
#666B81

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#817B65
#817B65

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Split complementary

Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.

Split complementary color scheme
#666B81
#666B81

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#788165
#788165

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#816E65
#816E65

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Analogous

Analogous color schemes are made by picking three colors that are next to each other on the color wheel. They are perceived as calm and serene.

Analogous color scheme
#6E6581
#6E6581

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#666B81
#666B81

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#657881
#657881

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Triadic

Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.

Triadic color scheme
#666B81
#666B81

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#81656A
#81656A

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#6A8165
#6A8165

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Tetradic

Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.

Tetradic color scheme
#666B81
#666B81

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#7B6581
#7B6581

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#817B65
#817B65

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#6A8165
#6A8165

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Square

Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.

Square color scheme
#666B81
#666B81

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#816578
#816578

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#817B65
#817B65

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#65816E
#65816E

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Nearest named colors to #666B81

The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.

Mist Blue color link
Mist Blue

#646D7E

Jet Gray color link
Jet Gray

#616D7E

Sunset-stone-equanimity-natalie color link
Sunset-stone-equanimity-natalie

#656A88

Weathered Blue color link
Weathered Blue

#677583

Blue Bayoux color link
Blue Bayoux

#62777E

Waterloo color link
Waterloo

#727282

Raven color link
Raven

#6F747B

Infinity color link
Infinity

#6A7376

Dolphin color link
Dolphin

#6A6873

Kimberly color link
Kimberly

#695D87

Obelisk color link
Obelisk

#617274

Gateway color link
Gateway

#5E7175

#666B81 color backgrounds & wallpapers

Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.

#666B81 color image #666B81 color ORCN HD wallpaper 3840x2160 (Desktop)
#666B81 color image #666B81 color ORCN HD wallpaper 1170x2532 (Mobile)
#666B81 color image #666B81 color solid HD wallpaper 3840x2160 (Desktop)
#666B81 color image #666B81 color solid HD wallpaper 1170x2532 (Mobile)

Conversions between color systems and etc.

  • HEX#666B81
  • RGB102, 107, 129
  • CMYK11, 9, 0, 49
  • CSSrgb(102, 107, 129)
  • HSL229°, 12%, 45%
  • HSL Precise228.889°, 11.688%, 45.294%
  • HSV229°, 21%, 51%
  • HSB229°, 21%, 51%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.420
  • Normalized B (0.0–1.0)0.506
  • GLSLvec3(0.400, 0.420, 0.506)
  • GLSL with alphavec4(0.400, 0.420, 0.506, 1.000)
  • HLSL / Metalfloat3(0.400, 0.420, 0.506)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB42%
  • Percentage of Blue in RGB50.6%
  • Color FamilyBlue
  • Saturation FamilyLow Saturation
  • Lightness FamilyLight
  • HEX ID666B81
  • DECIMAL ID6712193
  • Name LengthThis color has no name
  • Seen by search & AI crawlers11 times
  • Counting from2025-01-01

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