Confused about my ovulation test results


Hey everyone!

My hubby and I trying to have a little bundle of joy and so I bought the First Response ovulation kit to help us determine my ovulation time. Here’s the results for the past two days. As you can see, today’s line is MUCH darker than the first one. I know it’s still a negative result (the lines should be the same color for the test to be positive right?), but I’m not sure what the color difference here means. Is there any correlation between the color intensity and approaching one’s ovulation day?

I have a 28 day cycle and my expected ovulation is August 1 (fertile window started on 27th).

Thanks for helping !🌸✨