Information about #66A5DB color

#66A5DB color image

Basic facts about this digital color

In the Register's classification, #66A5DB belongs to the Azure Color Family, featuring High Saturation and Very Light brightness. The mix behind it: rgb(102, 165, 219) — 40% red, 64.7% green, 85.9% blue; the print equivalent is CMYK 46 / 21 / 0 / 14. New to color codes? See our guide to RGB color codes.

#66A5DB is a vivid, lively sky-leaning azure that floats near the light end of the scale. In practice it works well for clean interfaces where content needs room to breathe. In The Official Register of Color Names it is a hair away from Little Boy Blue (#6CA0DC). Nearby in the Register you will also find Something Blue (#68ADD0) and Caps Blue (#68B1E2).

Technically, the mix leans on its blue channel (rgb(102, 165, 219)), which gives #66A5DB its character. If you plan to put text on a #66A5DB background, choose black — the contrast ratio is 8.0:1 (passing WCAG AAA), while white manages only 2.6:1. Out of 16,777,216 possible colors, #66A5DB is still unnamed — it can be claimed and named in The Official Register of Color Names.

#66A5DB color variations

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

#66A5DB 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

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

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

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

Tetradic

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

Tetradic color scheme

Square

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

Square color scheme

Nearest named colors to #66A5DB

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

Caps Blue color link
Caps Blue

#68B1E2

Iceberg color link
Iceberg

#71A6D2

Snap color link
Snap

#5BA0D0

Ruddy Blue color link
Ruddy Blue

#76ABDF

Malibu color link
Malibu

#66B7E1

Blue Gray color link
Blue Gray

#6699CC

Blue Jeans color link
Blue Jeans

#5DADEC

Blue Koi color link
Blue Koi

#659EC7

Parachute color link
Parachute

#65B8D1

Conversions between color systems and etc.

  • HEX#66A5DB
  • RGB102, 165, 219
  • CMYK46, 21, 0, 14
  • CSSrgb(102, 165, 219)
  • HSL208°, 62%, 63%
  • HSL Precise207.692°, 61.905%, 62.941%
  • HSV208°, 53%, 86%
  • HSB208°, 53%, 86%
  • Normalized R (0.0–1.0)0.400
  • Normalized G (0.0–1.0)0.647
  • Normalized B (0.0–1.0)0.859
  • GLSLvec3(0.400, 0.647, 0.859)
  • GLSL with alphavec4(0.400, 0.647, 0.859, 1.000)
  • HLSL / Metalfloat3(0.400, 0.647, 0.859)
  • Percentage of Red in RGB40%
  • Percentage of Green in RGB64.7%
  • Percentage of Blue in RGB85.9%
  • Color FamilyAzure
  • Saturation FamilyHigh Saturation
  • Lightness FamilyVery Light
  • HEX ID66A5DB
  • DECIMAL ID6727131
  • Name LengthThis color has no name
  • Seen by search & AI crawlers17 times
  • Counting from2025-01-01