Color

#43a37b

#43a37b
hex#43a37b
rgbrgb(67, 163, 123)
hslhsl(155, 42%, 45%)
oklchoklch(0.647 0.11 163.1)
Closest name: Cosmic Green (#30a877)Relative luminance 0.2882

Colors that go with #43a37b

Charcoal, Copper 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.

Real palettes that use #43a37b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a3436b

#43a34b · #439ba3

#7b43a3 · #a37b43

Split-complementary

Open in tool →

#a3439b · #a34b43

#4b43a3 · #a3436b · #9ba343

Contrast

#43a37b as textRatioAAAA largeAAAFix
Aaon white
3.1:1failpassfail
  • AA: use #358262 as the text (4.65:1)
  • AAA: use #28624a as the text (7.15:1)
  • AA: or shift the background to #2b2b2b (4.56:1)
Aaon black
6.76:1passpassfail
  • AAA: use #44a77e as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #43a37b 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 #43a37b
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 #43a37b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/43a37b-a2beb6-d459c8-1f2d2d-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