ECOS2019 the 32st International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems Wroclaw, Poland, 23-28 June 2019
WCAG level A sets no colour-contrast requirement, so “A” is the standard design. AA guarantees at least 4.5:1 for all text, AAA at least 7:1 and turns off moving backgrounds. Your choice is remembered on this device only.