Color

#278b68

#278b68
hex#278b68
rgbrgb(39, 139, 104)
hslhsl(159, 56%, 35%)
oklchoklch(0.571 0.106 165.2)
Closest name: Elf (#1b8a6b)Relative luminance 0.199

Colors that go with #278b68

Charcoal, Crimson and Medium Violet Red 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 →

#8b274a

#278b36 · #277c8b

#68278b · #8b6827

Split-complementary

Open in tool →

#8b277c · #8b3627

#36278b · #8b274a · #7c8b27

Contrast

#278b68 as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #258362 as the text (4.67:1)
  • AAA: use #1c634a as the text (7.16:1)
  • AA: or shift the background to #0f0f0f (4.54:1)
Aaon black
4.98:1passpassfail
  • AAA: use #30ab80 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #278b68 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 #278b68
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 #278b68 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/278b68-a2beb8-d459c0-1f2c2d-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