Color

#256a66

#256a66
hex#256a66
rgbrgb(37, 106, 102)
hslhsl(177, 48%, 28%)
oklchoklch(0.48 0.068 189.7)
Closest name: Aqua Obscura (#05696b)Relative luminance 0.1166

Colors that go with #256a66

Charcoal, Crimson and Cadet 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 →

#6a2529

#256a44 · #254b6a

#66256a · #6a6625

Split-complementary

Open in tool →

#6a254b · #6a4425

#44256a · #6a2529 · #4b6a25

Contrast

#256a66 as textRatioAAAA largeAAAFix
Aaon white
6.3:1passpassfail
  • AAA: use #22625f as the text (7.05:1)
Aaon black
3.33:1failpassfail
  • AA: use #2e8480 as the text (4.73:1)
  • AAA: use #3aa6a1 as the text (7.15:1)
  • AA: or shift the background to #dbdbdb (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 #256a66 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#256a66 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #256a66
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 #256a66 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/256a66-a2bcbe-d4599b-1f282d-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