Color

#2b645e

#2b645e
hex#2b645e
rgbrgb(43, 100, 94)
hslhsl(174, 40%, 28%)
oklchoklch(0.463 0.061 186.1)
Closest name: Aqua Obscura (#05696b)Relative luminance 0.1044

Colors that go with #2b645e

Crimson, Rust 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.

Real palettes that use #2b645e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#642b31

#2b6442 · #2b4d64

#5e2b64 · #645e2b

Split-complementary

Open in tool →

#642b4d · #64422b

#422b64 · #642b31 · #4d642b

Contrast

#2b645e as textRatioAAAA largeAAAFix
Aaon white
6.8:1passpassfail
  • AAA: use #29605b as the text (7.2:1)
Aaon black
3.09:1failpassfail
  • AA: use #378179 as the text (4.58:1)
  • AAA: use #46a49b as the text (7.04:1)
  • AA: or shift the background to #d4d4d4 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b645e 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

#2b645e reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b645e
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 #2b645e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b645e-a2bebe-d459a1-1f292d-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