Color

#271ba7

#271ba7
hex#271ba7
rgbrgb(39, 27, 167)
hslhsl(245, 72%, 38%)
oklchoklch(0.364 0.206 273.1)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.0401

Colors that go with #271ba7

Blue, Charcoal and Cornflower 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9ba71b

#1b55a7 · #6d1ba7

#a7271b · #1ba727

Split-complementary

Open in tool →

#a76d1b · #55a71b

#a71b55 · #9ba71b · #1ba76d

Contrast

#271ba7 as textRatioAAAA largeAAAFix
Aaon white
11.66:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #7065e6 as the text (4.69:1)
  • AAA: use #958dec as the text (7.3:1)
  • AA: or shift the background to #a1a1a1 (4.51:1)
  • AAA: or shift the background to #c9c9c9 (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 #271ba7 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

#271ba7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #271ba7
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 #271ba7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/271ba7-a49cc4-dfa54e-261f2d-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