A darker yellow colour is often the result of a meal that is too heavy in protein. This colour may also indicate the presence of a bladder infection or slightly insufficient hydration. There is nothing alarming about that. Drinking more would be the right solution to improve your digestion and have a sufficient water level in the body.
If you see that your urine is this colour, it means that you are in urgent need of d)hydration. This means that your water levels are excessively low and you should drink as soon as possible. Despite this, this colour does not reveal a real danger or that your health has deteriorated. Drink more and your urine colour should return to normal.