Japanese Kimono Scarf S5679 - Skinny Style Candy Striped Silk Jacquard
Slender silk scarf sewn from a vintage kimono panel
The pattern has thin stripes of blue and green shades with some pink
While dyeing, a thread must have been on the fabric, blocking the dye from reaching a certain area.  That left a white streak as seen in the photo.
The silk also has a hidden jacquard weave with a small, wavelike pattern.
But you can tie the scarf to obscure this.
Measures 64" x just 5.25" wide, more narrow than some styles here