1To fade in color; the color of something becomes lighter or loses saturation (intransitive), often due to time or sunlight.
このジーンズは何度も洗ったので色褪せてしまった。
These jeans have faded because they've been washed many times.
直射日光に長時間さらすと、布地が色褪せる。
If fabric is exposed to direct sunlight for a long time, it will fade.
古いポスターが色褪せて判読しにくくなった。
The old poster has faded and become hard to read.
2To lose vividness or freshness; used figuratively when memories, emotions, or enthusiasm gradually fade.
時間が経っても、あの時の感動が少しも色褪せることはない。
Even with time passing, the impact from that moment hasn't faded at all.
流行はすぐに色褪せることがあるが、良いデザインは長持ちする。
Trends can fade quickly, but good design lasts.
彼との思い出が徐々に色褪せていくのを感じた。
I felt my memories with him slowly fading.