Introduction to Colors in WebUI

In AIMMS WebUI there are three sets of colors with different purposes.

  1. Primary Colors: AIMMS specific colors that contribute to the look and feel of the application. Used for branding, buttons, active states, etc.

  2. Graytones: Neutral colors used for interface elements. To achieve a harmonious look, a small amount of Primary Blue is mixed into the gray. When using custom Primary Colors we advise to adjust the Graytones as well with a small percentage of the primary color to achieve a harmonious look.

  3. Data Colors: The colors used for data visualization. AIMMS comes out of the box with sets of 9, 11 and 19 colors for use in graphs, charts, etc.

Primary colors

These are the colors that are used for actions or for active elements. The primary color is used for the main navigation and buttons. The secondary color is used as hover color or active color.

../_images/Dark-Blue.png ../_images/Blue.png ../_images/Light-Blue.png

Dark Blue


Light Blue

R0 G0 B129

R0 G25 B255

R192 G249 B255




../_images/Dark-Green.png ../_images/Green.png ../_images/Light-Green.png

Dark Green


Light Green

R0 G155 B0

R0 G212 B0

R0 G231 B0




../_images/Yellow.png ../_images/Light-Yellow.png


Light Yellow

R255 G193 B0

R255 G230 B0




../_images/Gray_01.png ../_images/Gray-2.png ../_images/Gray-3.png

Gray 01

Gray 02

Gray 03

R0 G10 B34

R80 G87 B103

R160 G164 B173




../_images/Gray-4.png ../_images/Gray-5.png ../_images/Gray-6.png

Gray 04

Gray 05

Gray 06

R198 G200 B204

R212 G214 B217

R225 G226 B230




../_images/Gray-7.png ../_images/Gray-8.png

Gray 07

Gray 08

R237 G239 B242

R245 G246 B250



Data Colors

When choosing colors to use for your data, try to use one of these approaches to color schemes for data visualization.

  1. Sequential schemes are suited to ordered data that progress from low to high. Lightness steps dominate the look of these schemes, with light colors for low data values to dark colors for high data values.

  2. Diverging schemes put equal emphasis on mid-range critical values and extremes at both ends of the data range. The critical class or break in the middle of the legend is emphasized with light colors and low and high extremes are emphasized with dark colors that have contrasting hues.

  3. Qualitative schemes do not imply magnitude differences between legend classes, and hues are used to create the primary visual differences between classes. Qualitative schemes are best suited to representing nominal or categorical data.

(Descriptions courtesy of Colorbrewer)