No question for me, the first one works best. Why?
1. the very pale pink defines the spaces and shows off the other fabrics
2. the scale of the pale pink works great
3. the blue undertones all harmonize
Second one -- everything just runs together visually versus the first one, which blends with contrast
Last one-- better than the second, but the orange looks dull
Try a tangerine color if you have it--or an orange with a bluish undertone instead of yellow. Or a neon orange (think vibrant dreamsicle) --and as close to solid as possible.
Glad you're trying fabrics out of your norm. It's hard, so I applaud your attempt. I have a hard time with colors that aren't bright. I have made one or two quilts whose colors I don't gravitate to, and while they turned out fine, they don't excite me. Color is so personal; if you're just not "feelin' it", don't waste your effort if this one's for you.