Lightness does not apply correctly on Recolour

[felinh]

Affinity Photo is the last version on W10.

Hello,

I want to recolorise an image (a texture that is mainly unicolor with H1,S1,L1 color) to a new target color H2,S2,L2.

using the Recolor tool (normal mode, 100% opacity).

I put H2 on the Hue

I put S2 on the Sat

I need to put (L2-L1) on the lightness to have a chance to be close the target color H2,S2,L2.

Can you confirm this is the expected behavior?

thank you

[NotMyFault]

Seems to be working like this.

Is there a specific reason to use recolor adjustment ?

How should the other pixels be affected ?

If you want to recolor to one exact color, other methods might be more suitable, e.g

• fill layers with blend mode color, 
• fill layer with mask (flood selection tool with 0% tolerance)

But it depends if and how the other parts of the image should be adjusted.

[felinh]

Hi,

thank you for your answer. There is no other specific reason  than my ignorance (I am a newbee 😉)

My goal is is to turn the pink image attached into brown with specific RGB #9a826f in the middle but respecting the engraved text and circle.

• about fill layers with blend mode color:

 When I check afterward with color picker in the center of the image  the color distance returned is 15 (so quite different) as shown in picture below (picker size 65x65pixel, main grid is 64 pixels).  I checked color distance with this site.

 

 

• fill layer with mask (flood selection tool with 0% tolerance)

result is plain color, which is not what I am looking for.

[NotMyFault]

You may use a step-wise approach. 

1. adjust lightness by HSL adjustment to target lightness (52%) and 0% saturation
2. adjust color with fill layer

See file attached.

You can the use info panel and fine-tune the adjustment until you get the optimum match.

Your source image has a noticeable lightness gradient from left to right. It becomes visible if you activate the median blur which i used to emulate the color picker 65x65 grid.

If you want to keep the texture, this limits your color accuracy.

To go further, you can use frequency separation to eliminate the low frequency gradient, and keep the high frequency texture.

May activate blur filter or tester rectangle to visually check.

 

recolor.afphoto