Color

#2b1eb3

#2b1eb3
hex#2b1eb3
rgbrgb(43, 30, 179)
hslhsl(245, 71%, 41%)
oklchoklch(0.384 0.216 273.2)
Closest name: Galactic Highway (#3311bb)Relative luminance 0.047

Colors that go with #2b1eb3

Charcoal, Steel Blue 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 →

#a6b31e

#1e5cb3 · #751eb3

#b32b1e · #1eb32b

Split-complementary

Open in tool →

#b3751e · #5cb31e

#b31e5c · #a6b31e · #1eb375

Contrast

#2b1eb3 as textRatioAAAA largeAAAFix
Aaon white
10.83:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #6d62e4 as the text (4.52:1)
  • AAA: use #958eec as the text (7.36:1)
  • AA: or shift the background to #a8a8a8 (4.55:1)
  • AAA: or shift the background to #d1d1d1 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b1eb3 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

#2b1eb3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b1eb3
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 #2b1eb3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b1eb3-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