Rubidium

Grey as a lab bench where they handle the silvery metal.

#c5b9b4

Rubidium is a pale grey.

It can be described as pale, delicate, faded and almost grey.

Set in black, because black reads best on it.

Rubidium

Rubidium is a chemical element; it has symbol Rb and atomic number 37. It is a very soft, whitish-grey solid in the alkali metal group, similar to potassium and caesium. Rubidium is the first alkali metal in the group to have a density higher than water. On Earth, natural rubidium comprises two isotopes: 72% is a stable isotope, 85Rb, and 28% is the slightly radioactive 87Rb, with a half-life of 48.8 billion years – more than three times as long as the estimated age of the universe.

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rubidium

Noun

The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
A single atom of this element.

Wiktionary

Its neighbors.

Georgian Pink, #c6b8b4 Mauve Stone, #c4bab6 Japanese Poet, #c4bab7 Elegant Ice, #c4b9b7 Nebulous, #c4b9b8 Studio Mauve, #c6b9b8 Grey Rose, #c6b6b2 Luxe Grey, #c3bab0 Froth, #c6b8ae Soft Dove, #c2bbb2 Seagull Beach, #c9bbb4 Legendary, #c6baaf

Rubidium

#c5b9b4

Rubidium

Rubidium

rubidium

Its neighbors.

Its complements.

As a ramp.