Hi Fermi,
The plant pictured “looks” like Brodiaea elegans. Making a definitive identification online is questionable. I would feel much more comfortable looking at the plant in your garden. If you have a large collection of Brodiaea species in your garden, hybrids are possible. In addition, seeds offered in seed exchanges can be misidentified, mislabeled, or be unintended hybrids. Such things occur much more frequently than we might want to believe. If getting a positive ID is important to you, my suggestion is to checkout the Calflora website (calflora.org). There are links to Jepson eFlora (ucjeps.berkeley.edu) where you can find dichotomous keys, as well as a detailed botanical description of each taxon.
Having written everything above pictured is a close up photograph of Brodiaea elegans ssp. elegans growing in its native habitat in El Dorado County, California. This photograph might be helpful for identification of the plant in your garden.
Pictured is another scene of Brodiaea elegans ssp. elegans in its native habitat in El Dorado County, California. It is one of the last Brodiaea species to bloom in our area each season. Brodiaea elegans grows abundantly on our El Dorado County farm property. It is mostly a low elevation species, however I have studied, in detail, a population that is found at an elevation of 5,125 feet (1,562 meters) in El Dorado County, California. This is well above the usual altitude range for this species.
Pictured above is Brodiaea elegans ssp. elegans in our Sacramento garden. If the species is well placed in the garden it can be quite effective in the landscape, harmonizing with other species, and making an attractive, naturalistic display. I have a number of interesting hybrids coming along, such as Brodiaea elegans x terrestris, as well as others. Brodiaea minor is another species I grow in our garden and enjoy greatly. It is a much more diminutive species and can be used in the garden in different ways.
I will be curious to find out what you discover about your seedling plant. I am always interested in how the Themidaceae perform in other gardens. May you have good fortune.