Color

#2a273f

#2a273f
hex#2a273f
rgbrgb(42, 39, 63)
hslhsl(248, 24%, 20%)
oklchoklch(0.288 0.043 289.1)
Closest name: Midnight Express (#21263a)Relative luminance 0.023

Colors that go with #2a273f

Dark Olive Green, Sea Green 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 →

#3c3f27

#27303f · #36273f

#3f2a27 · #273f2a

Split-complementary

Open in tool →

#3f3627 · #303f27

#3f2730 · #3c3f27 · #273f36

Contrast

#2a273f as textRatioAAAA largeAAAFix
Aaon white
14.38:1passpasspassPasses AAA — no fix needed.
Aaon black
1.46:1failfailfail
  • AA: use #756ea6 as the text (4.54:1)
  • AAA: use #9690bb as the text (7:1)
  • AA: or shift the background to #919191 (4.56:1)
  • AAA: or shift the background to #b5b5b5 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2a273f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2a273f reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2a273f
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 #2a273f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2a273f-a69cc4-dfac4e-271f2d-e9ecf1?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