Siam Color


Siam is pale, warm-toned shade of cool yellow. It is better contrasting with white. This color combines beautifully with warm blue, cool red or cool cyan

Inverse Color #9b95ab
Complementary Color #5a5469
Color Shade: cool yellow (76.36° hue)
Color Temperature: warm
Lightness: 37.25% (better contrasting with white)
Siam Color Sample
Siam Color Sample

Better Alternatives To #646a54

If you're looking for a similar cool yellow shade, there are some better alternatives to Siam Color. The Iron-ic color for instance is a lighter and a bit more faded option, however this color has a mid yellow bias. Consider a lighter and more saturated alternative called Grape Vine (#797f5a) for more energetic effect. Try Kakadu Trail as it also a bit more faded and calm.

Complementary Palette

#5a5469 is the best complementary color to Siam. Warm blue shades generally complement the cool yellow hues best as they are found on the opposite end of the color wheel. The most popular #646a54 complementary color is Scarpa Flow, as it offers maximum contrast and grab the viewer's attention.

Analogous Palette

The analogous palette of warm yellow, cool yellow, and warm green colors offers a soft combination of similar warm shades. The analogous colors of Siam are #696554 and #596954. Thus found on the left and right of #646a54 on the color wheel with a 30° gap. Consider matching Kokoda and Cactus colors as they work well with Siam.

Split-complementary Palette

The split-complementary Siam palette consists of #655469 and #545969 colors. They can be found 30° apart on either side of the complementary color (#5a5469). Try Salt Box and Comet colors in combination with #646a54, as they are not as contrasting as a complementary color, hence, giving more hue variety to make your design stand out.

Triadic Palette

The triadic palette of #646a54 offers a combination of mid magenta and cool cyan shades and equally high contrast between the three of them. Find triadic colors at the 120° distance from the Siam. Thus Scorpion and Shuttle Gray giving maximum hue separation to use all three together.

Square Palette

The square color palette of Siam contains three additional colors. Thus, complementary Scarpa Flow, Corduroy, and Zambezi split by 90° on the color wheel. #646a54 square combo is a palette of cool yellow, warm cyan, warm blue and cool red shades that work together well.

Tetradic Palette

The tetradic palette is a bit more complex than the square and has more of a rectangle shape. Siam tetradic combo consists of warm blue complementary color (#5a5469) and two others. The Shuttle Gray is positioned 120° clockwise from the primary color and Pine Cone – 120° from the complementary Scarpa Flow. This palette is not recommended to use as-is. Try to tweak the saturation and brightness of #546369 and #695a54.

Conversion Table

In a RGB color space, hex #646a54 is made of 34% red, 37% green and 29% blue. In a HSL mode Siam has a hue angle of 76.36°, a saturation of 11.58% and a lightness of 37.25%. In a CMYK space (used in printing only), hex #646a54 is made of 2.35% cyan, 0% magenta, 8.63% yellow and 58.43% black ink.

HEX #646a54
RGB Decimal rgb(100,106,84)
RGB Percentage 34%, 37%, 29%
CMYK 2.35, 0, 8.63, 58.43
HSL hsl(76.36,11.58%,37.25%)
HSV (or HSB) hsv(76.36,20.75%,41.57%)
CIE-LAB lab(43.7377,-6.5889,11.6005)
XYZ xyz(12.0098,13.6575,10.3907)