Here are some reds I did a comparison of on another site a few days ago... Looks like you might have to click on it to see all four. It was taken in the evening on a day that was mid 80s, full sun. All of these daylilies are in the same bed in my yard, no afternoon shade. Insider Trading, Fabulous Frieda, Fern Stone and Wispy Rays.
And here is Soul On Fire and Forever Redeemed, a few days earlier, late afternoon. Wasn't as hot that day.
Here is Forever Redeemed and Wispy Rays on that same afternoon.