spectroscopy - A compound that absorbs all visible light

Is there a compound that absorbs all visible light?

UV-vis absorption spectra of the catalyst in the presence of CO 2 . The

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Introduction to Photosynthesis

Compound Interest: Analytical Chemistry – Infrared (IR) Spectroscopy

What is it that gives a colour it's colour, what makes them distinct from each other (I mean on a chemical or molecular level)? - Quora

UV-Visible Spectroscopy

visible uv absorption spectrum of polyenes alkenes carotene buta-1,3-diene hexa-1,3,5-triene octa-1,3,5,7-tetraene deca-1,3,5,7,9-pentaene astaxanthin spectra maximum ultraviolet absorption peaks wavelength Doc Brown's chemistry revision notes

Color

3.6: Interpreting Ultraviolet Spectra - Chemistry LibreTexts