In 2015, I had the opportunity to try out the full 72 colour Blockx range, and they have all been added to my website, but I thought it may be helpful to be able to see the full range here together as well. The majority of the colours are single pigment colours, mixed with gum Arabic and honey. They come from Belgium, and Blockx has been around since 1865. They are available in half pans, giant pans, 15ml or 35ml tubes.
![]() |
| Blockx watercolour full range chart 1 |
Since Cadmiums have been discontinued in many brands it is good to see them still being produced so nicely by Blockx, as while I don't use cadmiums for my general painting, I value them tremendously as excellent pigments when you want a more opaque colour. I keep a supply of the old DS cadmiums in my studio - Cadmium yellow light and deep, Cadmium scarlet and Cadmium red and I've now added the lovely Blockx Cadmium Red-Orange to my studio collection.
Other really lovely colours are the Turquoise Blue and Turquoise Green both made with PB36, a lovely deep blue-purple Ultramarine Violet PV15, and the granulating Manganese Violet PV16.
![]() |
| Blockx watercolour full range chart 2 |
While I don't recommend every colour in the range, I really enjoyed painting them all out. The particularly tricky pigments are difficult in any range - PY53, PG18, PV14 and PG23 in particular i.e. Nickel Yellow, Viridian, Cobalt Violet and Green Earth.
You can see the interesting Cadmium Purple left, but it is actually much stronger than it looks on my screen.
Notice there are two Ultramarines and two burnt siennas - nice to have options. I liked the Burnt Sienna Light best - nice and granulating (both are made with PBr7).
There are only a few mixed pigment colours and I wasn't that interested in any of them, but with so many single pigment paints it's easy to mix your own.
A real plus with this range is that you can try them out buying half pans of colours you may use only a little but buy tubes of those you may use regularly - or large tubes of those you'll use a lot.
Note - I haven't tried the pan colours. I expect that if you are in or near Belgium these watercolours should be well-priced. There are sets available on Amazon.com but they contain some less useful colour combinations so it may be better to choose your own.
October 2018
I have been working my way through my many lists of updates I have wanted to do, and one was to photograph and add these swatches. I'll leave the above versions since they are painted over a black line, but add the more detailed ones below.
August 2026
The Lemon Yellow is a really lovely bright version.
This set includes beautiful warm and mostly single pigment yellows and oranges. Gamboge is a lovely choice for a warm yellow. Orange can be mixed, but this is a lovely convenience version.
I love the granulation of Manganese Violet. Cobalt Violet is very gentle, but also has lovely granulation.
October 2018
I have been working my way through my many lists of updates I have wanted to do, and one was to photograph and add these swatches. I'll leave the above versions since they are painted over a black line, but add the more detailed ones below.
August 2026
Time for another update and upgrade - I've replaced the photographed swatches with scans that I have individually colour-matched for greater accuracy.
The full range has undergone a change - or is in the process of changing, according to the Belgian website. Nine new colours are being introduced. Cobalt Chromite Green, Perylene Violet, Prussian Green, Perylene Maroon, Perylene Red, Perylene Green, Anthraquinoone Red, Azomethine Yellow and Indian Red.
Apparently the range will still be 72 colours, though there is a mention of 81, and I can only count 61 on the website so I am not sure what the final number will be.
These swatches are still based on the 2018 range. I'll * the twenty colours that are no longer shown on the website - perhaps they will be discontinued?
The Lemon Yellow is a really lovely bright version.
| Block Watercolours - Zinc White*, Titanium White*, Nickel Yellow*, Naples Yellow, Lemon Yellow. |
The Primary Yellow would be a great choice for a limited palette.
Block Watercolours - Blockx Yellow, Cadmium Yellow Pale, Primary Yellow*,
Golden Green, Naples Yellow Red.
This set includes beautiful warm and mostly single pigment yellows and oranges. Gamboge is a lovely choice for a warm yellow. Orange can be mixed, but this is a lovely convenience version.
Block Watercolours - Indian Yellow, Cadmium Yellow Medium, Gamboge,
Cadmium Yellow Orange, Permanent Orange.
Pyrrolo Red is made from my favourite warm yellow pigment PR255. Blockx Red is a gorgeous bright fire engine red.
Block Watercolours - Pyrrolo Vermilion, Cadmium Red-Orange*, Pyrrolo Red, Blockx Red, Cadmium Red.
Rose Pale Lake and Rose Lake are almost indistinguishable. Either works as a primary red or a cool red in a larger palette. Crimson Lake is my favourite crimson pigment.
Block Watercolours - Cadmium Purple, Quinacridone Red, Rose Pale Lake, Rose Lake*, Crimson Lake
Block Watercolours - Quinacridone Magenta, Magenta*, Dioxazine Mauve,Manganese Violet*, Cobalt Violet.
This is a lovely version of PV15, which can often be very weak.
Block Watercolours - Ultramarine Violet, Cerulean Grey, Cerulean Blue, Cyanine Blue, Cobalt Blue*.
Block Watercolours - Cobalt Blue Dark, French Ultramarine Blue Deep, French Ultramarine Light,
Prussian Blue*, Indanthrene Blue.
Block Watercolours - Blockx Blue, Primary Blue, Turquoise Blue, Indigo, Payne's Grey*.
I like the fact that there are largely single pigment greens in this range, with a range of characteristics.
Block Watercolours - Turquoise Green, Chrome Green*, Blockx Green*, Permanent Green, Cobalt Green.
Block Watercolours - Phthalo Green, Viridian, Green Earth, Sap Green, Hooker's Green*.
Block Watercolours - Olive Green*, Gold Ochre, Italian Earth, Yellow Ochre, Transparent Mars Yellow*.
Block Watercolours - Burnt Sienna Light, Burnt Sienna Deep, Light Red,
Venetian Red, Transparent Mars Red*.
Block Watercolours - Transparent Mars Brown, Van Dijck Brown,
Burnt Umber*, Sepia and Neutral Tint*.
| Block Watercolours - Ivory Black, Lamp Black. |
Happy painting :-)

