Color

#1a5cea

#1a5cea
hex#1a5cea
rgbrgb(26, 92, 234)
hslhsl(221, 83%, 51%)
oklchoklch(0.53 0.224 262.7)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1381

Colors that go with #1a5cea

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 →

#eaa81a

#1ac4ea · #401aea

#ea1a5c · #5cea1a

Split-complementary

Open in tool →

#ea401a · #c4ea1a

#ea1ac4 · #eaa81a · #1aea40

Contrast

#1a5cea as textRatioAAAA largeAAAFix
Aaon white
5.58:1passpassfail
Aaon black
3.76:1failpassfail
  • AA: use #326dec as the text (4.53:1)
  • AAA: use #6a95f1 as the text (7.18:1)
  • AA: or shift the background to #e8e8e8 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a5cea as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1a5cea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a5cea
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 #1a5cea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a5cea-9ca4c4-df6b4e-211f2d-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