Color

#1da551

#1da551
hex#1da551
rgbrgb(29, 165, 81)
hslhsl(143, 70%, 38%)
oklchoklch(0.634 0.165 150.2)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.2777

Colors that go with #1da551

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 →

#a51d71

#2da51d · #1da595

#511da5 · #a5511d

Split-complementary

Open in tool →

#951da5 · #a51d2d

#1d2da5 · #a51d71 · #a5951d

Contrast

#1da551 as textRatioAAAA largeAAAFix
Aaon white
3.2:1failpassfail
  • AA: use #188642 as the text (4.64:1)
  • AAA: use #126431 as the text (7.26:1)
  • AA: or shift the background to #292929 (4.54:1)
Aaon black
6.55:1passpassfail
  • AAA: use #1fad55 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1da551 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #1da551
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 #1da551 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1da551-a2beb0-c859d4-1f2d2b-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