Nice color pairings from http://tachyons.io/docs/themes/skins/

colors.css

/* Light Backgrounds */
.near-black { color: #111111 }
.bg-washed-yellow { background-color: #FFFCEB }

.dark-gray { color: #333333 }
.bg-near-white { background-color: #F4F4F4 }

.dark-gray { color: #333333 }
.bg-light-red { background-color: #FF725C }

.dark-gray { color: #333333 }
.bg-yellow { background-color: #FFD700 }

.dark-gray { color: #333333 }
.bg-washed-yellow { background-color: #FFFCEB }

.mid-gray { color: #555555 }
.bg-washed-yellow { background-color: #FFFCEB }

.purple { color: #5E2CA5 }
.bg-white { background-color: #FFFFFF }

.purple { color: #5E2CA5 }
.bg-washed-yellow { background-color: #FFFCEB }

.green { color: #19A974 }
.bg-white { background-color: #FFFFFF }

.navy { color: #001B44 }
.bg-near-white { background-color: #F4F4F4 }

.navy { color: #001B44 }
.bg-white { background-color: #FFFFFF }

.navy { color: #001B44 }
.bg-yellow { background-color: #FFD700 }

.navy { color: #001B44 }
.bg-washed-blue { background-color: #F6FFFE }

.navy { color: #001B44 }
.bg-washed-yellow { background-color: #FFFCEB }

.navy { color: #001B44 }
.bg-washed-red { background-color: #FFDFDF }

.dark-blue { color: #00449E }
.bg-white { background-color: #FFFFFF }

.dark-blue { color: #00449E }
.bg-washed-blue { background-color: #F6FFFE }

.dark-blue { color: #00449E }
.bg-washed-yellow { background-color: #FFFCEB }

.blue { color: #357EDD }
.bg-washed-yellow { background-color: #FFFCEB }

.blue { color: #357EDD }
.bg-washed-red { background-color: #FFDFDF }

/* Dark Backgrounds */

.light-gray { color: #EEEEEE }
.bg-navy { background-color: #001B44 }

.near-white { color: #F4F4F4 }
.bg-near-black { background-color: #111111 }

.near-white { color: #F4F4F4 }
.bg-navy { background-color: #001B44 }

.white { color: #FFFFFF }
.bg-navy { background-color: #001B44 }

.gold { color: #FFB700 }
.bg-dark-gray { background-color: #333333 }

.light-yellow { color: #FBF1A9 }
.bg-blue { background-color: #357EDD }