Where can we have vibrancy in colours?
In Monochrome fractal art, just the use of one colour base, with a hue change of +/-20, and the full extent of changes in brightness, contrast and even saturation/luminance can take us from muted colours through to vibrant colours. So long as these are all within a monochrome base, these are acceptable.

In Bi-chrome fractal art, vibrancy is not an issue, provided the
main fractal is using just one colour-base possibly with up to +/- 20 in hue, with just a small area or object in a different, possibly vibrant colour as an accent to attract the eye.

In Multi-chrome fractal art, however, we are definitely only looking for subtlety in tones - nothing highly vibrant (bright). Stick to earth tones or pastels, and these will be ok. Anything in this category that is too bright will unfortunately be declined, as including them would make little difference between this group and any other general fractal group.
A Note About Bi-Chrome Fractal ArtWe are getting many submissions where, although there are two main colours (with slight variations - hue changes - to them), they tend to be interwoven throughout the fractal. These will not necessarily be declined. However, what we are
really looking for is a little different: One monochrome work in more subdued colours, with a single accent - a single object or area that is offset in a different colour - somewhere in the fractal image, which may be as vibrant as you like. This is part of the challenge for people to try out. Typically it could be a black and white image with something somewhere that is red, but not where the red is visible throughout the whole image.
A Suggested Method To Find Your GradientA way to explore the kind of gradients you can get to make monotone or monochrome colouring is to open up a new page in Photoshop (or other editing program), flood fill it with a single colour, then using the Hue & Saturation tool make bands (via selection up and down the image) and play with the saturation slider, the brightness/darkness slider, and even the hue slider (only a tiny bit up to +/- 20% with that one), and you have the basis for the kind of gradients to be found in these categories. Monotone (as you will see in the description at the link) is all one colour with only lighter or darker shades, whereas monochrome encompasses a fuller spectrum. In just about all cases the spectrum can include black and white at either end of the brightness scale (if desired).
Some actual examples complete with fractals made from the gradients produced will be submitted by me soon. Meanwhile, there are some tutorials also available in our Resources gallery, which you can try out.
DisclaimerBecause we are not dealing with pure base colours, it is often difficult to categorise whether a fractal work is mono, bi or multi-chrome in nature. We do our best to place works in the appropriate folders, and may sometimes move them again if it becomes apparent a mistake was initially made. Viewing them with various different screens can also cause confusion in this area, so please bear with us - and let us know if you think your work has been placed in the wrong category!

For a description of Monotone versus Monochrome see
HERE!
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