It refers to the color that represents the reddish brown color of the chestnuts that have fallen. In "Genji Monogatari", there is a statement, "Ao-blunt slender attack, Ochiguri, somehow, a hakama tool that can be enjoyed by old people ...", and...

A crow's feather-like glossy black that has long been used as the name of a color that expresses the black and glossy women's hair.Dye inkPart number: KO-0101Capacity: 40 ml Uses: Fountain pens, pens, brushes   [About the Kyo no Oto...

It means "the color that is popular now" and refers to the red color dyed with safflower, which was touted during the Heian period. You can see how much it was liked by women of the dynasty at that time.Dye inkPart...

The Kaweco SKYLINE Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 10.9 cmPosted Length: 13 cmUncapped Length: 10.1 cmWeight: 9 gramsBody/Trim Material: PlasticFilling Type: CartridgeNib: 0.9 mm

The Kaweco BRASS Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 10.9 cmPosted Length: 13 cmUncapped Length: 10.1 cmWeight: 42 gramsBody/Trim Material: BrassFilling Type: CartridgeNib: 0.7 mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.9mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.9mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.5mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.7mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.9mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.9mm

The Kaweco Classic Sport fountain pen is a great pocket pen with a compact design and size.  Capped Length: 4.2 inches.Posted Length: 5 inchesUncapped Length: 4 inchesWeight: 9 gramsBody/Trim Material: ResinFilling Type: CartridgeNib: 0.5mm