Color

#270fdb

#270fdb
hex#270fdb
rgbrgb(39, 15, 219)
hslhsl(247, 87%, 46%)
oklchoklch(0.42 0.268 269.7)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0589

Colors that go with #270fdb

Charcoal, Crimson and Cobalt 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 →

#c4db0f

#0f5ddb · #8d0fdb

#db270f · #0fdb27

Split-complementary

Open in tool →

#db8d0f · #5ddb0f

#db0f5d · #c4db0f · #0fdb8d

Contrast

#270fdb as textRatioAAAA largeAAAFix
Aaon white
9.64:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #6e5df4 as the text (4.54:1)
  • AAA: use #9588f7 as the text (7.14:1)
  • AA: or shift the background to #b3b3b3 (4.6:1)
  • AAA: or shift the background to #dedede (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #270fdb 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

#270fdb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #270fdb
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 #270fdb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/270fdb-a59cc4-dfaa4e-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