Color

#2a3847

#2a3847
hex#2a3847
rgbrgb(42, 56, 71)
hslhsl(211, 26%, 22%)
oklchoklch(0.335 0.032 250.6)
Closest name: Astral Nomad (#203943)Relative luminance 0.0378

Colors that go with #2a3847

Dark Olive Green, Sienna 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 →

#47392a

#2a4647 · #2a2a47

#472a38 · #38472a

Split-complementary

Open in tool →

#472a2a · #46472a

#472a46 · #47392a · #2a472a

Contrast

#2a3847 as textRatioAAAA largeAAAFix
Aaon white
11.97:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #597797 as the text (4.51:1)
  • AAA: use #7e98b4 as the text (7.04:1)
  • AA: or shift the background to #a1a1a1 (4.63:1)
  • AAA: or shift the background to #c7c7c7 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a3847 as the background.

Brands using this color

Fonts for this mood

#2a3847 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a3847
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 #2a3847 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a3847-9cabc4-df534e-1f202d-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