If I want to compare “lavender” to “lilac”, or “Kelly green” to “pea green” is there a site for this?
I mean where there is a color wheel or palette grid, more than just words.
There aren’t specific definitions for most of those types of color names. Kelly green is pretty standard, but paint from different paint companies will still look a little different.
Try checking out different brands’ craft paint color charts, such as Plaid. [url=http://www.oreilly.com/catalog/wdnut/excerpt/color_names.html
This page gives names to 140 web colors.
I think wiki enteries for colors have a color sample. The problem is, however, if your trying to compare colors that are rather similar, you’re going to need to calibrate your monitor first (which you need hardware to do). Your best bet might be to go to a paint store and look the their samples, though I don’t know how accurate that would be.
This is what came up for Kelly Green Shades of green - Wikipedia
The industry standard for colors - Pantone.
They don’t list fanciful names though. And the colors will vary based on monitors/printers.
Your best bet is to get a PMS book. Here’s an online version of the chart.
psycat90’s answer is correct. The best way to match a color is with a PMS book, but don’t expect them to have names like “lavender” and “lilac.” Any online solution would be skewed by your monitor calibration.
Until I clicked the link I had a different idea of what PMS book would be. 
When I look at paint strips at the hardware store different brands (Behr, Sherwin Williams, etc) will give the same names for colors (e.g. bone, cream, eggshell). Do they have a “standardized” color palate?
Malachi Throne, could you tell us the ultimate purpose of your question. I didn’t mention Pantone colors because they don’t use the color names like you referenced. If you need to be able to communicate a color to someone else with precision, Pantone is the way to go.
And could someone report or fix my post, I didn’t see the bad coding until now.
As long as your world can be done with spot colors 
(Most Pantone spot colors look rather different when approximated in CMYK process.)
I do see that Pantone has been working with paint manufacturers to build a standard color language for paint, but Pantone paint is expensive - about $40 per quart.
For the most part, there is absolutely no consistency whatsoever between brands of paint. Even white will be different from one brand to another. “Off-whites” get challenging - if you’re painting an apartment, do you need Navajo White, Cream or Cottage White?
Just would like a visual to go with the dictionary words.
There was a thread about blue jeans and discussion of indigo and anil, not words I see in the catalogs. Trying to run those to ground I ran into
lavender (So called because it was used in bathing and washing. See Lave)
2. The pale, purplish color of lavender flowers, paler and
more delicate than lilac. [1913 Webster]
Just like you need a picture to figure out which rodent or monkey is which, you need something more than words to distinguish colors.
In my job, I sometimes get someone saying they want a particular shade. I Google Image it and pick out whatever looks closest to a swatch of solid color. I haven’t had any complaints yet.