Information about #381F21 color
Basic facts about this digital color
#381F21 presents itself as a mildly saturated warm red — one that carries a shadowy depth. It is a natural fit for night-mode interfaces and high-contrast pairings with light text. In The Official Register of Color Names it is practically indistinguishable from Black Kite (#351E1C). Nearby in the Register you will also find Spitfire (#381921) and Toorak (#392523).
The recipe behind #381F21 is rgb(56, 31, 33), with red as the dominant ingredient. If you plan to put text on a #381F21 background, choose white — the contrast ratio is 15.2:1 (passing WCAG AAA), while black manages only 1.4:1. For print, note the heavy black component (K:78) — ink coverage matters with tones this deep. Out of 16,777,216 possible colors, #381F21 is still unnamed — it can be claimed and named in The Official Register of Color Names.
#381F21 color variations
View this color variations of tints, shades, tones and hues.
#381F21 color tints
Tints look brighter, pastel, and less intense.
#381F21 color shades
Shades look darker, richer, and more solid.
#381F21 color tones
Tones looks more sophisticated and complex than base colors.
#381F21 color hues
A hue refers to the basic neighbors of color and is variation of base color on the color wheel.
#381F21 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 #381F21 color
View adjacent and very similar colors.
Nearest named colors to #381F21
The closest officially registered color names in the Register, ordered by similarity — your shade’s neighborhood is already being claimed.
#351E1C
#381921
#392523
#3C2126
#3E2025
#351F19
#3D2622
#3C241B
#401A22
#3B2820
#35281E
#2F1D25
#381F21 color backgrounds & wallpapers
Download color wallpaper / background for your Desktop PC, Tablet or Mobile phone.
Conversions between color systems and etc.
- HEX#381F21
- RGB56, 31, 33
- CMYK0, 10, 9, 78
- CSSrgb(56, 31, 33)
- HSL355°, 29%, 17%
- HSL Precise355.2°, 28.736%, 17.059%
- HSV355°, 45%, 22%
- HSB355°, 45%, 22%
- Normalized R (0.0–1.0)0.220
- Normalized G (0.0–1.0)0.122
- Normalized B (0.0–1.0)0.129
- GLSLvec3(0.220, 0.122, 0.129)
- GLSL with alphavec4(0.220, 0.122, 0.129, 1.000)
- HLSL / Metalfloat3(0.220, 0.122, 0.129)
- Percentage of Red in RGB22%
- Percentage of Green in RGB12.2%
- Percentage of Blue in RGB12.9%
- Color FamilyRed
- Saturation FamilyMild Saturation
- Lightness FamilyDark
- HEX ID381F21
- DECIMAL ID3677985
- Name LengthThis color has no name
- Seen by search & AI crawlers13 times
- Counting from2025-01-01
