Color

#437a78

#437a78
hex#437a78
rgbrgb(67, 122, 120)
hslhsl(178, 29%, 37%)
oklchoklch(0.541 0.059 192.5)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1647

Colors that go with #437a78

Charcoal, Amber and Champagne 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 →

#7a4345

#437a5d · #43607a

#78437a · #7a7843

Split-complementary

Open in tool →

#7a4360 · #7a5d43

#5d437a · #7a4345 · #607a43

Contrast

#437a78 as textRatioAAAA largeAAAFix
Aaon white
4.89:1passpassfail
  • AAA: use #355f5e as the text (7.12:1)
Aaon black
4.29:1failpassfail
  • AA: use #47807e as the text (4.66:1)
  • AAA: use #59a19f as the text (7.02:1)
  • AA: or shift the background to #f7f7f7 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #437a78 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 #437a78
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 #437a78 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/437a78-a2bcbe-d45999-1f282d-e9f1ed?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