Information about #21105C color
Basic facts about this digital color
The color #21105C reads as a energetic, saturated blue and leans clearly toward the dark side. Designers typically reach for tones like this for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is almost identical to Suns Purple (#1D1160). Its next-closest registered neighbors are Dark Indigo (#1F0954) and Royal Indigo (#240952).
In RGB terms — rgb(33, 16, 92) — the blue channel does the heavy lifting here. Accessibility-wise, white text works best on #21105C: 16.2:1 contrast (passing WCAG AAA) versus 1.3:1 for black. For print, note the heavy black component (K:64) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #21105C is still unnamed — it can be claimed and named in The Official Register of Color Names.
#21105C color variations
View this color variations of tints, shades, tones and hues.
#21105C color tints
Tints look brighter, pastel, and less intense.
#21105C color shades
Shades look darker, richer, and more solid.
#21105C color tones
Tones looks more sophisticated and complex than base colors.
#21105C color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#21105C 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 #21105C color
View adjacent and very similar colors.
Nearest named colors to #21105C
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#1D1160
#1F0954
#240952
#210059
#111154
#160059
#201173
#132257
#191970
#32174D
#1B2450
#262857
#21105C color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#21105C
- RGB33, 16, 92
- CMYK23, 30, 0, 64
- CSSrgb(33, 16, 92)
- HSL253°, 70%, 21%
- HSL Precise253.421°, 70.37%, 21.176%
- HSV253°, 83%, 36%
- HSB253°, 83%, 36%
- Normalized R (0.0–1.0)0.129
- Normalized G (0.0–1.0)0.063
- Normalized B (0.0–1.0)0.361
- GLSLvec3(0.129, 0.063, 0.361)
- GLSL with alphavec4(0.129, 0.063, 0.361, 1.000)
- HLSL / Metalfloat3(0.129, 0.063, 0.361)
- Percentage of Red in RGB12.9%
- Percentage of Green in RGB6.3%
- Percentage of Blue in RGB36.1%
- Color FamilyBlue
- Saturation FamilyHigh Saturation
- Lightness FamilyDark
- HEX ID21105C
- DECIMAL ID2166876
- Name LengthThis color has no name
- Seen by search & AI crawlers8 times
- Counting from2025-01-01
