Information about #15171B color
Basic facts about this digital color
#15171B presents itself as a gently muted sky-leaning azure — one that lives deep in the shadows. In practice it works well for moody backdrops, typography on light surfaces and premium packaging. In The Official Register of Color Names it is practically indistinguishable from Eigengrau (#16161D). Nearby in the Register you will also find All Black (#181818) and Very Dark Azure (#11171D).
The recipe behind #15171B is rgb(21, 23, 27), with blue as the dominant ingredient. On this background, white text reaches a 17.9:1 contrast ratio (passing WCAG AAA); black stays at 1.2:1. For print, note the heavy black component (K:89) — ink coverage matters with tones this deep. Like most of the 16.7 million digital colors, this one is still waiting for a name — naming it takes a minute.
#15171B color variations
View this color variations of tints, shades, tones and hues.
#15171B color tints
Tints look brighter, pastel, and less intense.
#15171B color shades
Shades look darker, richer, and more solid.
#15171B color tones
Tones looks more sophisticated and complex than base colors.
#15171B color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#15171B 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.
Split complementary
Split complementary schemes are like complementary but they uses two adiacent colors of the complement. They are more flexible than complementary ones.
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.
Triadic
Triadic color schemes are created by picking three colors equally spaced on the color wheel. They appear quite contrasted and multicolored.
Tetradic
Tetradic color schemes are made form two couples of complementary colors in a rectangular shape on the color wheel.
Square
Square color schemes are like tetradic arranged in a square instead of rectangle. Colors appear even more contrasting.
Alternatives to #15171B color
View adjacent and very similar colors.
Nearest named colors to #15171B
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#16161D
#181818
#11171D
#181A18
#1A1A1D
#17111D
#141216
#1B1B1B
#111D1D
#141414
#1A1D1A
#1A1D1D
#15171B color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#15171B
- RGB21, 23, 27
- CMYK2, 2, 0, 89
- CSSrgb(21, 23, 27)
- HSL220°, 13%, 9%
- HSL Precise220°, 12.5%, 9.412%
- HSV220°, 22%, 11%
- HSB220°, 22%, 11%
- Normalized R (0.0–1.0)0.082
- Normalized G (0.0–1.0)0.090
- Normalized B (0.0–1.0)0.106
- GLSLvec3(0.082, 0.090, 0.106)
- GLSL with alphavec4(0.082, 0.090, 0.106, 1.000)
- HLSL / Metalfloat3(0.082, 0.090, 0.106)
- Percentage of Red in RGB8.2%
- Percentage of Green in RGB9%
- Percentage of Blue in RGB10.6%
- Color FamilyAzure
- Saturation FamilyLow Saturation
- Lightness FamilyVery Dark
- HEX ID15171B
- DECIMAL ID1382171
- Name LengthThis color has no name
- Seen by search & AI crawlers326 times
- Counting from2025-01-01
