Color

#2b454a

#2b454a
hex#2b454a
rgbrgb(43, 69, 74)
hslhsl(190, 26%, 23%)
oklchoklch(0.372 0.033 211)
Closest name: Charcoal (#36454f)Relative luminance 0.0526

Colors that go with #2b454a

Dark Olive Green, Steel Blue and Teal 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 →

#4a302b

#2b4a40 · #2b364a

#4a2b45 · #454a2b

Split-complementary

Open in tool →

#4a2b36 · #4a402b

#402b4a · #4a302b · #364a2b

Contrast

#2b454a as textRatioAAAA largeAAAFix
Aaon white
10.23:1passpasspassPasses AAA — no fix needed.
Aaon black
2.05:1failfailfail
  • AA: use #4f7e87 as the text (4.67:1)
  • AAA: use #6b9ea8 as the text (7.08:1)
  • AA: or shift the background to #adadad (4.56:1)
  • AAA: or shift the background to #d6d6d6 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b454a as the background.

Brands using this color

Fonts for this mood

#2b454a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b454a
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 #2b454a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b454a-a2b6be-df4e7c-1f252d-e9f1ef?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