Color

#398e4f

#398e4f
hex#398e4f
rgbrgb(57, 142, 79)
hslhsl(136, 43%, 39%)
oklchoklch(0.579 0.126 149.3)
Closest name: seagreen (#2e8b57)Relative luminance 0.2078

Colors that go with #398e4f

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 →

#8e3977

#4d8e39 · #398e7a

#4f398e · #8e4f39

Split-complementary

Open in tool →

#7a398e · #8e394d

#394d8e · #8e3977 · #8e7a39

Contrast

#398e4f as textRatioAAAA largeAAAFix
Aaon white
4.07:1failpassfail
  • AA: use #348349 as the text (4.68:1)
  • AAA: use #276237 as the text (7.27:1)
  • AA: or shift the background to #141414 (4.52:1)
Aaon black
5.16:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398e4f 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 #398e4f
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 #398e4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398e4f-a2bead-b959d4-1f2d29-ebf1e9?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