Measurement of a blue magic wavelength for the fermionic-strontium clock transition

State-insensitive optical traps of neutral atoms offer a platform for precision metrology and quantum simulation. These traps are created using magic wavelengths of light, which uniformly shift the energy levels of two atomic states throughout the trap and preserve the transition frequency. Strontium has been shown to have a magic wavelength at 813.4 nm for its clock transition, and has been successfully used in arrays of bosonic optical-clock tweezers. We measure a new theoretically-predicted magic wavelength around 497 nm for this clock transition. This new blue-regime magic wavelength has five times the polarizability, and allows for smaller spot sizes.  Our measurement also aids in the determination of excited state transition matrix elements and their effects on the clock transition. This new magic wavelength will facilitate our creation of more closely spaced 2D optical fermionic tweezer arrays, enabling new experiments with entangled tweezer clocks and condensed-matter simulations.