Prussian Blue, You know--for Blueprints : )

Brenda · March 4, 2020, 6:03pm

I usually make layers for 2D blue curves blue, for blueprints. Lately, I’ve taken to using a variation of Prussian Blue, which was involved with traditional Cyanotype blueprint making.

Wikipedia states that the RGB color coordinates are: 0, 49, 83
Working with Rhino3d’s default color scheme, I use: 0, 76, 128
…which is the same shade but with a brighter. Only 2 values need to be typed.

It might be handy for the internet/Photoshop crowd, if people could type in a hex RGB value into the Rhino color coordinate box.

Ref: Prussian blue - Wikipedia

Max3 · March 4, 2020, 6:06pm

Cool, but why set it as an object color rather than a background color if what you’re into is blueprints?

Brenda · March 4, 2020, 6:11pm

I don’t usually work with real "blue"prints. I often import drawings as black and while, and then knock out the background using a selective color.

kleerkoat · March 4, 2020, 6:15pm

that’s a cool color
i’ve tweaked all my colors to ones used in the solarized color scheme

Max3 · March 4, 2020, 7:48pm

“Solarized scheme”?

Also, should there be a thread where we can all swap optionsexport files?

John_Brock · March 4, 2020, 7:53pm

I think you’re confusing “blueprints”, with “blue lines”.

kleerkoat · March 4, 2020, 7:56pm

Max3 · March 4, 2020, 7:58pm

Ah.

I just use a set of 20 contrasting colors I got from an information design blog. This is prettier.

Asterisk · March 4, 2020, 8:01pm

tenor

kleerkoat · March 4, 2020, 9:49pm

here’s a shot to sample the colors easily.

Robb · March 5, 2020, 2:50pm

my first and only “blueprint” machine was one that used a chemical other than ammonia and printed blue lines on a white background. No odor and an eminently readable print!

Helvetosaur · March 5, 2020, 3:02pm

I used to like that ammonia smell!

Fred_C · March 5, 2020, 3:08pm

Yep. Smelling salts. https://en.wikipedia.org/wiki/Smelling_salts

Robb · March 5, 2020, 3:25pm

Yeah…it’ll keep your sinuses clean!

ssommerv · March 5, 2020, 4:55pm

Neat! Could you post a picture of how everything looks with that setup?

Max3 · March 5, 2020, 5:29pm

My colors:

My color picker plug-in custom colors, chosen for high contrast working on a dark background:

dk2079 · March 5, 2020, 5:36pm

In deed, hex would be very welcome!

https://mcneel.myjetbrains.com/youtrack/issue/RH-55747

wynott · March 5, 2020, 5:39pm

Eyedropper selection would be handy so you could like pictureframe in an image with the swatches you want to use and pick off them.

Max3 · March 5, 2020, 5:58pm

WIP has eyedropper already.

kleerkoat · March 5, 2020, 6:54pm

looking at the image there doesn’t seem to be that much of a difference but to me it’s softer on my eyes.