L.A.B Numbers

[Stan black]

Ok, here are the numbers i need l 73.5 a 5.50 b 74.08 i have these at the moment l 75.74 b 5.41 c 74.18 im trying to understand if i need to add more yellow or red or need to be lighter ,etc thanks

 

[Achilles]

For what color? Each color has its own LAB values

 

[Adil]

hi all
I hope this answer can satisfy anyone who sees this post to manipulate LAB values you must first understand the color space
normally L is the brightness A is a mixture between green and red
and B is a mix between blue and yellow.
in your case for component L you must reduce the brightness by 2.24 so you will have to add black. in component A diggerence of 0.09 you will have to add a little red and finally in component B you will have to add a small amount of blue or yellow
good luck to everyone

 

[Biggs]

Honestly, you're only a hair lighter than required. Your Delta-E Should be quite close right where you are. Your Delta E 2000 is probably 1-1.5.
You can add a shred of black, but you're threading a thin line there.

 

[SteveSuffRIT]

Ok, here are the numbers i need l 73.5 a 5.50 b 74.08 i have these at the moment l 75.74 b 5.41 c 74.18 im trying to understand if i need to add more yellow or red or need to be lighter ,etc thanks

I know this post is very old from 2019 but....
You can use an online calculator to determine the Delta E (dE, DE)
dE '76 = 2.2
dE '00 = 1.6
Most printers try for <2.0 dE'00.
You can improve by just changing the L* by solid ink density (SID) or ink film thickness (IFT).
You are too dark, needs to be lighter.

 

[MacD]

I know this post is very old from 2019 but....
You can use an online calculator to determine the Delta E (dE, DE)
dE '76 = 2.2
dE '00 = 1.6
Most printers try for <2.0 dE'00.
You can improve by just changing the L* by solid ink density (SID) or ink film thickness (IFT).
You are too dark, needs to be lighter.

I believe the conversation may have been reversed. They stated the target, then their actual result, and then confused themselves by asking if it needed to be lighter. As you mentioned, film thickness is the root cause.

For application adjustments (if actual is light to target):
Offset: Increase keys, increase sweep, or reduce water.
Flexo: Use a higher BCM anilox (one step up typically covers a 3‑point lightness shift if the roll is clean and not worn), reduce viscosity, or increase base colorants proportionally (avoiding clear/white products).

The hue is correct, so adjustments should be made using non‑hue components if colorants are your target. However, using black to darken does not always give the desired chroma and will shift the DE. That’s why increasing the base colorants proportionally is often the better approach, as it maintains the hue line while building the strength needed to reach the lightness target.

Hope this helps.