Color

#12a554

#12a554
hex#12a554
rgbrgb(18, 165, 84)
hslhsl(147, 80%, 36%)
oklchoklch(0.634 0.164 151.5)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2768

Colors that go with #12a554

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 →

#a51263

#1aa512 · #12a59e

#5412a5 · #a55412

Split-complementary

Open in tool →

#9e12a5 · #a5121a

#121aa5 · #a51263 · #a59e12

Contrast

#12a554 as textRatioAAAA largeAAAFix
Aaon white
3.21:1failpassfail
  • AA: use #0f8544 as the text (4.71:1)
  • AAA: use #0b6534 as the text (7.18:1)
  • AA: or shift the background to #292929 (4.53:1)
Aaon black
6.54:1passpassfail
  • AAA: use #13ae59 as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12a554 as the background.

Brands using this color

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

Palettes built around it

mcpConnect your agent — build around #12a554
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 #12a554 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12a554-a2beb2-d059d4-1f2d2c-eaf1e9?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