Color

#129b57

#129b57
hex#129b57
rgbrgb(18, 155, 87)
hslhsl(150, 79%, 34%)
oklchoklch(0.607 0.149 154)
Closest name: Green Revolution (#009944)Relative luminance 0.2426

Colors that go with #129b57

Charcoal, Blue and Crimson lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9b1257

#129b12 · #129b9b

#57129b · #9b5712

Split-complementary

Open in tool →

#9b129b · #9b1212

#12129b · #9b1257 · #9b9b12

Contrast

#129b57 as textRatioAAAA largeAAAFix
Aaon white
3.59:1failpassfail
  • AA: use #10844a as the text (4.75:1)
  • AAA: use #0c6438 as the text (7.25:1)
  • AA: or shift the background to #1f1f1f (4.59:1)
Aaon black
5.85:1passpassfail
  • AAA: use #14ad61 as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #129b57 as the background.

Brands using this color

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

mcpConnect your agent — build around #129b57
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #129b57 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/129b57-a2beb3-d459d2-1f2d2c-e9f1ea?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