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  2. Air Quality Index (EPA PM2.5)

Air Quality Index (EPA PM2.5)

  • Good Green
    #00e400
  • Moderate Yellow
    #ffff00
  • Unhealthy Sensitive Orange
    #ff7e00
  • Unhealthy Red
    #ff0000
  • Very Unhealthy Purple
    #8f3f97
  • Hazardous Maroon
    #7e0023
  1
Created at 10/27/2026 14:33
byhex
The palette consists of Light, Semi dark, Dark colors. Accent colors Moderate Yellow #ffff00 and Very Unhealthy Purple #8f3f97. Palette has Cool, Warm colors temperature.

By lightness, this palette runs from #7E0023 (darkest) to #FFFF00 (lightest). The lightness range is wide.

Overall saturation feels vivid (higher chroma) — 83% of colors are vivid.

Some colors sit roughly opposite each other on the color wheel, giving the palette complementary contrast.

Overall temperature among swatches leans warm (4 of 6).

HEX codes (sorted): #00E400, #7E0023, #8F3F97, #FF0000, #FF7E00, #FFFF00

Palette Air Quality Index (EPA PM2.5) combines 6 color codes:
HEX: #00e400, RGB: (0, 228, 0); HEX: #ffff00, RGB: (255, 255, 0); HEX: #ff7e00, RGB: (255, 126, 0)
HEX: #ff0000, RGB: (255, 0, 0); HEX: #8f3f97, RGB: (143, 63, 151); HEX: #7e0023, RGB: (126, 0, 35)
Simplified version of palette colors
Shade of Lime Green, Yellow, Shade of Dark Orange, Red, Tint of Dark Magenta, Tint of Maroon
Color scheme was created by hex

Color codes in palette

Air Quality Index (EPA PM2.5) color codes HEX, RGB information in table

ColorHEXRGBNameAlternative name
#00e400#00e400RGB(0, 228, 0)Good Green—
#ffff00#ffff00RGB(255, 255, 0)Moderate YellowYellow
#ff7e00#ff7e00RGB(255, 126, 0)Unhealthy Sensitive OrangeShade of Amber
#ff0000#ff0000RGB(255, 0, 0)Unhealthy RedRed
#8f3f97#8f3f97RGB(143, 63, 151)Very Unhealthy Purple—
#7e0023#7e0023RGB(126, 0, 35)Hazardous Maroon—

Color Palette Contrast

5 color pairs have low contrast and need improvement which may impact readability.
Text ColorBackground ColorContrast Ratio
#00e400
#ffff00
1.61
#00e400
#ff7e00
1.46
#ff7e00
#ff0000
1.56
#ff0000
#8f3f97
1.57
#8f3f97
#7e0023
1.73

Image palette Air Quality Index (EPA PM2.5) png

Air Quality Index (EPA PM2.5) color palette: Good Green, Moderate Yellow, Unhealthy Sensitive Orange, Unhealthy Red
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