Color

#256f5a

#256f5a
hex#256f5a
rgbrgb(37, 111, 90)
hslhsl(163, 50%, 29%)
oklchoklch(0.49 0.08 170.8)
Closest name: Greasy Greens (#117755)Relative luminance 0.125

Colors that go with #256f5a

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.

Real palettes that use #256f5a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6f253a

#256f35 · #255f6f

#5a256f · #6f5a25

Split-complementary

Open in tool →

#6f255f · #6f3525

#35256f · #6f253a · #5f6f25

Contrast

#256f5a as textRatioAAAA largeAAAFix
Aaon white
6:1passpassfail
  • AAA: use #216351 as the text (7.07:1)
Aaon black
3.5:1failpassfail
  • AA: use #2d866d as the text (4.74:1)
  • AAA: use #38a889 as the text (7.13:1)
  • AA: or shift the background to #e0e0e0 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #256f5a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#256f5a reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #256f5a
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 #256f5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/256f5a-a2beb9-d459b7-1f2b2d-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