3 important guigelines to follow when designing logo. hope you guys will benefit from them. COLORS Colors which are often used are black, green, grey, navy blue and red. Blend of orange and yellow portrays the energy, enthusiasm and success. Orange shows the creativity and innovative ways while black, blue and grey emphasis on professionalism, authority and guidance. GRAPHICS Clients will want the best business advice for their businesses from consulting companies so the LOGO should be professional and reliable because it is the picture that will talk first before your words. FONT STYLE Being formal in nature, consulting companies use formal and official font styles to keep their professional and elegant look. Most consulting companies use Futura, courier and Times New Roman in LOGO.