Color

#45b56e

#45b56e
hex#45b56e
rgbrgb(69, 181, 110)
hslhsl(142, 45%, 49%)
oklchoklch(0.691 0.146 152.5)
Closest name: mediumseagreen (#3cb371)Relative luminance 0.3544

Colors that go with #45b56e

Charcoal, Mustard Yellow and Royal Blue 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 →

#b5458c

#54b545 · #45b5a6

#6e45b5 · #b56e45

Split-complementary

Open in tool →

#a645b5 · #b54554

#4554b5 · #b5458c · #b5a645

Contrast

#45b56e as textRatioAAAA largeAAAFix
Aaon white
2.6:1failfailfail
  • AA: use #328551 as the text (4.56:1)
  • AAA: use #26643d as the text (7.06:1)
  • AA: or shift the background to #383838 (4.52:1)
  • AAA: or shift the background to #141414 (7.1:1)
Aaon black
8.09:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #45b56e as the background.

Brands using this color

mcpConnect your agent — build around #45b56e
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 #45b56e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/45b56e-a2beaf-c659d4-1f2d2a-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