Color

#2c3f4e

#2c3f4e
hex#2c3f4e
rgbrgb(44, 63, 78)
hslhsl(206, 28%, 24%)
oklchoklch(0.358 0.036 242.7)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0464

Colors that go with #2c3f4e

Dark Olive Green, Teal and Sienna 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 →

#4e3b2c

#2c4e4c · #2c2e4e

#4e2c3f · #3f4e2c

Split-complementary

Open in tool →

#4e2c2e · #4e4c2c

#4c2c4e · #4e3b2c · #2e4e2c

Contrast

#2c3f4e as textRatioAAAA largeAAAFix
Aaon white
10.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.93:1failfailfail
  • AA: use #547a96 as the text (4.6:1)
  • AAA: use #799ab4 as the text (7.09:1)
  • AA: or shift the background to #a8a8a8 (4.58:1)
  • AAA: or shift the background to #d1d1d1 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2c3f4e as the background.

Brands using this color

Fonts for this mood

#2c3f4e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2c3f4e
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 #2c3f4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2c3f4e-9caec4-df4e56-1f212d-e9f1f1?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