Information about #15303C color
Basic facts about this digital color
#15303C presents itself as a confidently colored steel-blue azure — one that leans clearly toward the dark side. In practice it works well for dark UI themes, backgrounds and dramatic accents. In The Official Register of Color Names it is almost identical to Billabong (#173141). Its next-closest registered neighbors are Yankees Blue (#1C2841) and Nordic (#1D393C).
In RGB terms — rgb(21, 48, 60) — the blue channel does the heavy lifting here. Accessibility-wise, white text works best on #15303C: 13.8:1 contrast (passing WCAG AAA) versus 1.5:1 for black. On paper it relies strongly on black ink (K:76), so proof dark layouts before a large print run. Out of 16,777,216 possible colors, #15303C is still unnamed — it can be claimed and named in The Official Register of Color Names.
#15303C color variations
View this color variations of tints, shades, tones and hues.
#15303C color tints
Tints look brighter, pastel, and less intense.
#15303C color shades
Shades look darker, richer, and more solid.
#15303C color tones
Tones looks more sophisticated and complex than base colors.
#15303C color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#15303C 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 #15303C color
View adjacent and very similar colors.
Nearest named colors to #15303C
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#173141
#1C2841
#1D393C
#192C49
#1F263B
#203838
#0C3A37
#0C2C47
#202A44
#072F37
#242E3B
#122B4A
#15303C color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#15303C
- RGB21, 48, 60
- CMYK15, 5, 0, 76
- CSSrgb(21, 48, 60)
- HSL198°, 48%, 16%
- HSL Precise198.462°, 48.148%, 15.882%
- HSV198°, 65%, 24%
- HSB198°, 65%, 24%
- Normalized R (0.0–1.0)0.082
- Normalized G (0.0–1.0)0.188
- Normalized B (0.0–1.0)0.235
- GLSLvec3(0.082, 0.188, 0.235)
- GLSL with alphavec4(0.082, 0.188, 0.235, 1.000)
- HLSL / Metalfloat3(0.082, 0.188, 0.235)
- Percentage of Red in RGB8.2%
- Percentage of Green in RGB18.8%
- Percentage of Blue in RGB23.5%
- Color FamilyAzure
- Saturation FamilyModerate Saturation
- Lightness FamilyDark
- HEX ID15303C
- DECIMAL ID1388604
- Name LengthThis color has no name
- Seen by search & AI crawlers14 times
- Counting from2025-01-01
