If coloured text is used on a bright background the contrast will be weak for optimal contrast results is white text against dark colored backgrounds.

What colour text on green background. Third we have purple on green the infamous color scheme of Barney. The left color picker controls the background. Again any amount of black grey or white is allowed.

In signage wayfinding design color is the combining factor to harmonize the sign with the environment. When purple text is placed on a green background it has a lot of the same effect on the eye as the color combination of red and green. Going for a little subtle or subdued.

In spite of the large chromatic contrasts between the lines of text and the green background none is very legible at the point where the text and background luminances are equal. A few palettes that might be of help to you. This is also problematic because it causes a visual vibration for users with normal color vision.

Colored Paper and the Readability of Text. Some examples of color combinations that do not make good high-contrast color schemes. The text seems to vibrate which causes eye strain.

Green text on black background. Green is a secondary colour thats created by combining primary colours blue and yellow. For example to get the same HTML red you saw in previous section we would have to use RGB255017.

While Dark Blue text is a bad choice. The white text on bright neon lime green is the problem. The black line has higher luminance contrast with the background and can be read it would be even easier to read with a brighter green.