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Go to the Colour or Swatches Panels and select a colour.

Screen-Shot-2018-12-18-at-18-56-22.png

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Check your opacity on the brush and in the colour panel.

Screen-Shot-2018-12-18-at-19-09-21.png

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I think you might be using the Colour Replacement Tool, you need to select the Paint Brush Tool.

To select the Paint Brush Tool just press 'B' on the keyboard a few times until you see the Brush on its own icon.

Screen-Shot-2018-12-18-at-19-11-53.png

 

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You have Blend Mode: Multiply set, change that to Normal

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We got there eventually, its an easy thing to miss, enjoy your painting.

Have a play with the Blend Modes on brushes to get different effects, using Blend Mode: Screen will show white and not black, it kind of the opposite to Multiply.

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Hello @Phily
Happy to read your question, let me now add my 2 cents here.
in fact, i have a Technic i enjoyed a lot for days which consist to duplicate the Brush you want to work with, then you go to its settings and in the advanced tab simply slide up the Hue bar; don't forget to put the setting next to that Hue bar to (by unfolding it) to Velocity or simply whatever you may prefer.
After that's done, close it and enjoy painting with flowing Hue colors.
100% Hue with Velocity will give you more color variance, if you set less percentage of Hue then you will get colors that fits in that space only (which i found not bad at all).

Hope this will make you happy !

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2 hours ago, firstdefence said:

I think you might be using the Colour Replacement Tool, you need to select the Paint Brush Tool.

To select the Paint Brush Tool just press 'B' on the keyboard a few times until you see the Brush on its own icon.

Screen-Shot-2018-12-18-at-19-11-53.png

 

Dear can you tell me more about the color replacement brush tool and what it is intended for ?

Never be the Same Again !
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* Affinity Suite [Designer + Photo + Publisher]
* Camtasia 2022 + CorelDraw Technical Suite 2022 + Blender 3.4.0 Alpha

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2 hours ago, MEB said:

... although colour here really means Hue

Which makes me wonder why it was not named Hue Replacement Brush to begin with.... :35_thinking:

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  • 6 months later...

Hello everyone. My first post here and very (very) much a newbie to Affinity. I've been using the Colour Replacement Brush to change the hue of environment maps that I use in my CAD package. The maps are simple and are either jpg or png format.

I had successfully changed the hue of two or three maps then late yesterday, something stopped working. With the tool selected, I can set the RGB colour values for the brush in the top right-hand panel, but the circle of the brush tool no longer shows that colour - it just remains 'clear'. When I try to apply a hue change, nothing happens.

It looks as though I've inadvertently changed a critical setting. Any ideas what that might be and how I can get the tool working again?

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Hi MEB - thanks for a very quick response :)

Current settings from the top tool bar, left to right: Width 79px; Opacity 100%; Flow 100%; Hardness 80%; Length 35px; Tolerance 10%. I've tried changing these values but it makes no difference. Could it be something to do with my settings on the Colour tab? What's the significance of the foreground and background colours in the context of the Colour Replacement Brush - should I bring the foreground or background to the fore? That said, I've tried both ways and it doesn't seem to have any effect. Also, the button with the diagonal red line on a white ground?

In Edit>Preferences>User Interface, the only change I've made is to tick "Always show Brush Crosshair", which I found to make precise picking easier.

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