Color

#398987

#398987
hex#398987
rgbrgb(57, 137, 135)
hslhsl(179, 41%, 38%)
oklchoklch(0.581 0.078 193)
Closest name: darkcyan (#008b8b)Relative luminance 0.2051

Colors that go with #398987

Charcoal, Copper and Crimson 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 →

#89393a

#398960 · #396289

#873989 · #898739

Split-complementary

Open in tool →

#893962 · #896039

#603989 · #89393a · #628939

Contrast

#398987 as textRatioAAAA largeAAAFix
Aaon white
4.12:1failpassfail
  • AA: use #368180 as the text (4.56:1)
  • AAA: use #296160 as the text (7.06:1)
  • AA: or shift the background to #121212 (4.55:1)
Aaon black
5.1:1passpassfail
  • AAA: use #45a5a4 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398987 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 #398987
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 #398987 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398987-a2bbbe-d45996-1f272d-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