Color

#1e55fa

#1e55fa
hex#1e55fa
rgbrgb(30, 85, 250)
hslhsl(225, 96%, 55%)
oklchoklch(0.533 0.251 264.5)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1368

Colors that go with #1e55fa

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 →

#fac31e

#1ec3fa · #551efa

#fa1e55 · #55fa1e

Split-complementary

Open in tool →

#fa551e · #c3fa1e

#fa1ec3 · #fac31e · #1efa55

Contrast

#1e55fa as textRatioAAAA largeAAAFix
Aaon white
5.62:1passpassfail
Aaon black
3.74:1failpassfail
  • AA: use #3768fb as the text (4.54:1)
  • AAA: use #6e92fc as the text (7.18:1)
  • AA: or shift the background to #e6e6e6 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1e55fa as the background.

Brands using this color

Fonts for this mood

#1e55fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1e55fa
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 #1e55fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1e55fa-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