Color

#1f52ea

#1f52ea
hex#1f52ea
rgbrgb(31, 82, 234)
hslhsl(225, 83%, 52%)
oklchoklch(0.513 0.234 264.6)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1227

Colors that go with #1f52ea

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 →

#eab71f

#1fb7ea · #521fea

#ea1f52 · #52ea1f

Split-complementary

Open in tool →

#ea521f · #b7ea1f

#ea1fb7 · #eab71f · #1fea52

Contrast

#1f52ea as textRatioAAAA largeAAAFix
Aaon white
6.08:1passpassfail
  • AAA: use #1446db as the text (7.17:1)
Aaon black
3.45:1failpassfail
  • AA: use #406bed as the text (4.54:1)
  • AAA: use #7393f2 as the text (7.18:1)
  • AA: or shift the background to #dedede (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f52ea as the background.

Brands using this color

Fonts for this mood

#1f52ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f52ea
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 #1f52ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f52ea-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