If you're looking for a bright colorful palette inspired by the late 60's and early 70's here is one for you. This vintage postcard doesn't have a date, but they began publishing in 1965 and they put out a lot of colorful comedy hippie and swinger type cards. I got a few of them when I got this one.
To me, this palette of turquoise, magenta, yellow and green is a unique collection of a specific version of these colors popular from the time.The turquoise has a little more green in it and is a bit softened. The magenta is super saturated and clear, the yellow has a good amount of orange in it and is dense and the green has more yellow in it - a version that was used a lot during that time. If you want the hex code numbers they are from left to right: 3ca9b4, d91d6e, ffd337, 69b643.