Color

#399d7e

#399d7e
hex#399d7e
rgbrgb(57, 157, 126)
hslhsl(161, 47%, 42%)
oklchoklch(0.629 0.104 169)
Closest name: Bulma Hair (#359e6b)Relative luminance 0.2649

Colors that go with #399d7e

Charcoal, Crimson and Chocolate 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 #399d7e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9d3959

#399d4b · #398b9d

#7e399d · #9d7e39

Split-complementary

Open in tool →

#9d398b · #9d4b39

#4b399d · #9d3959 · #8b9d39

Contrast

#399d7e as textRatioAAAA largeAAAFix
Aaon white
3.33:1failpassfail
  • AA: use #2f8369 as the text (4.59:1)
  • AAA: use #23614e as the text (7.26:1)
  • AA: or shift the background to #262626 (4.54:1)
Aaon black
6.3:1passpassfail
  • AAA: use #3da987 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #399d7e 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 #399d7e
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 #399d7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/399d7e-a2beb8-d459bb-1f2c2d-e9f1eb?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