Color

#275cfc

#275cfc
hex#275cfc
rgbrgb(39, 92, 252)
hslhsl(225, 97%, 57%)
oklchoklch(0.549 0.244 264.8)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1511

Colors that go with #275cfc

Charcoal, Crimson and Amber 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 →

#fcc727

#27c7fc · #5c27fc

#fc275c · #5cfc27

Split-complementary

Open in tool →

#fc5c27 · #c7fc27

#fc27c7 · #fcc727 · #27fc5c

Contrast

#275cfc as textRatioAAAA largeAAAFix
Aaon white
5.22:1passpassfail
  • AAA: use #043ff1 as the text (7.03:1)
Aaon black
4.02:1failpassfail
  • AA: use #3668fc as the text (4.54:1)
  • AAA: use #6d91fd as the text (7.12:1)
  • AA: or shift the background to #f0f0f0 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #275cfc as the background.

Brands using this color

Fonts for this mood

#275cfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #275cfc
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 #275cfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/275cfc-9ca1c4-df754e-221f2d-e9eff1?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