Color

#818f00

#818f00
hex#818f00
rgbrgb(129, 143, 0)
hslhsl(66, 100%, 28%)
oklchoklch(0.617 0.142 116.5)
Closest name: olivedrab (#6b8e23)Relative luminance 0.2431

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#0e008f

#8f5600 · #398f00

#00818f · #8f0081

Split-complementary

Open in tool →

#00398f · #56008f

#008f56 · #0e008f · #8f0039

Contrast

#818f00 as textRatioAAAA largeAAAFix
Aaon white
3.58:1failpassfail
  • AA: use #6e7a00 as the text (4.72:1)
  • AAA: use #535c00 as the text (7.24:1)
  • AA: or shift the background to #1f1f1f (4.6:1)
Aaon black
5.86:1passpassfail
  • AAA: use #8e9e00 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #818f00 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#818f00 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #818f00
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #818f00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/818f00-b8bea2-4e86df-262d1f-f1eee9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md