Our flat card in cover weight fits in a A6 envelope, the perfect size for a directions or menu card. You can call it navy but look closer. It is really more sophisticated, more complex, more developed... and yes night is the new chocolate. It is clean and fresh and is a great balance for so many interesting colors. Flat size - 4 1/2" x 6 1/4"When designing, remember that darker colors may rub off on lighter colors. Consider using a layer (such as tissue) between the different colors.