Color

#378e2f

#378e2f
hex#378e2f
rgbrgb(55, 142, 47)
hslhsl(115, 50%, 37%)
oklchoklch(0.573 0.156 141.9)
Closest name: Forest Green (#228b22)Relative luminance 0.2036

Colors that go with #378e2f

Charcoal, Crimson 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 →

#862f8e

#668e2f · #2f8e56

#2f378e · #8e2f37

Split-complementary

Open in tool →

#562f8e · #8e2f66

#2f668e · #862f8e · #8e562f

Contrast

#378e2f as textRatioAAAA largeAAAFix
Aaon white
4.14:1failpassfail
  • AA: use #34862d as the text (4.57:1)
  • AAA: use #276321 as the text (7.26:1)
  • AA: or shift the background to #121212 (4.53:1)
Aaon black
5.07:1passpassfail
  • AAA: use #43ac39 as the text (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #378e2f 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 #378e2f
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 #378e2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/378e2f-a2bea3-8d4edf-1f2d24-eef1e9?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