SW 9128

Sherwin Williams Green Onyx

Sherwin Williams Green Onyx SW 9128 paint color review

Let’s dive into a full Green Onyx paint color review. Take a look at pictures of real interiors and exteriors painted with beautiful SW 9128. Find out if this gorgeous warm green paint color would look great on your living room walls or trims, kitchen cabinet, bedroom accent wall, bathroom or house exterior.

Official color page:Green Onyx SW 9128
Color code:SW 9128
Color name:Green Onyx
Brand:Sherwin Williams

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LRV of Green Onyx

Green Onyx SW 9128 has an LRV of 31.41% and refers to Medium colors that reflect a lot of light

Color paint LRV values

Light Reflectance Value measures the amount of visible and usable light that reflects from a painted surface.
Simply put, the higher LRV of paint color, the brighter room you will get.
Scale goes from 0% (absolute black, absorbing all light) to 100% (pure white, reflecting 100% of all light).

Act like a pro: Choosing paint with LRV of 31.41% be attentive to your bulbs light Brightness.Light Brightness – measured in lumens. The lower LRV of paint you have, the higher lumen level you need. Every square feet of room needs at least 40 lumens. That means for a 200 square feet living room you’ll need 8000 lumens of light. To achieve that brightness, you would require a total of 8 bulbs, 1000lm each.

What are Sherwin Williams Green Onyx undertones?

Yellow is Sherwin Williams Green Onyx undertone color, as you can clearly see on the color field below. To determine this undertone we’ve removed all the tints, tones, shades and get HUE (pure color). Seems that undertone definition on a white sheet is already outdated and rather inaccurate


HEX value

HEX value:


RGB code:

152, 154, 130

Is Sherwin Williams Green Onyx SW 9128 cool or warm?

warm colors
Color wheel
cool colors

With a hue of 65° this Green refers warm paint shade according to HSL (Hue, Saturation, Lightness) on the color wheel.

SW 9128 Green Onyx HSL code: 65, 11%, 56%

Hue - degree on a color wheel from 0 to 360. 0 is red, 120 is green, and 240 is blue.
Saturation is a percentage value. 0% is a shade of grey, and 100% is the full color.
Lightness is also a percentage value. 0% is black, and 100% is white.

  • Warm Green will make even large rooms feel cozy and intimate
  • Warm Green undertones tend to make you feel happy, energized and playful
  • Warm paint colors are ideal for kitchens, living rooms or bathrooms
  • Warmer hues make larger spaces feel more inviting

Act like a pro: Mixing warm and cool shades is a must have to get harmonius interior. Add accents that contrast with the primary color to create visual balance. If your walls are a warm color, don’t forget to add accent in cold colors (furniture, art, décor). A good practice is too use a complementary color scheme.

Coordinating colors.
Colors that go with Sherwin Williams Green Onyx:

Monochromatic color scheme

Monochromatic color scheme

This scheme consists of different shades, tints, and tones of a single color. It's the perfect hue combination, but with no accent decor it's pretty boring.

Lighter shades

Darker shades

Sherwin Williams SW 9128 Green Onyx

Color comparison

Green Onyx SW 9128 vs Cornwall Slate SW 9131

Are you struggling to choose between these two hues for your next project? Our comparison will help you choose the ideal color for your space.

Sherwin Williams Green Onyx SW 9128 vs Sherwin Williams Cornwall Slate SW 9131Sherwin Williams Green Onyx SW 9128
LRV: 31.41%
Medium color
Temperature: warm
LRV: 29.13%
Medium color
Temperature: warm

Green Onyx SW 9128 vs Rookwood Jade SW 2812

Trying to decide between these two shades? Our comparison highlights the similarities and differences between these two paint colors.

Sherwin Williams Green Onyx SW 9128 vs Sherwin Williams Rookwood Jade SW 2812Sherwin Williams Green Onyx SW 9128
LRV: 31.41%
Medium color
Temperature: warm
LRV: 32.85%
Medium color
Temperature: warm

Color codes

We have collected almost every possible color code you could ever need. To copy the code, just click the icon to the right of it.

HEX#989a82copy color code
RGB Decimal152, 154, 130copy color code
RGB Percent59.61%, 60.39%, 50.98%copy color code
HSVHue: 65° Saturation: 15.58% Value: 60.39%copy color code
HSLhsl(65, 11, 56)copy color code
CMYKCyan: 1.3 Magenta: 0.0 Yellow: 15.58 Key: 39.61copy color code
YIQY: 150.666 I: 6.52 Q: -7.892copy color code
XYZX: 28.533 Y: 31.399 Z: 25.67copy color code
CIE LabL:62.843 a:-5.048 b:12.382copy color code
CIE LuvL:62.843 u:0.104 v:17.827copy color code
Decimal10001026copy color code
Hunter lab56.034, -7.167, 12.062copy color code
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