Color

#1e53be

#1e53be
hex#1e53be
rgbrgb(30, 83, 190)
hslhsl(220, 73%, 43%)
oklchoklch(0.475 0.178 262.2)
Closest name: Denim (#1560bd)Relative luminance 0.1018

Colors that go with #1e53be

Charcoal, Crimson and Steel 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 →

#be881e

#1ea3be · #381ebe

#be1e53 · #53be1e

Split-complementary

Open in tool →

#be381e · #a3be1e

#be1ea3 · #be881e · #1ebe38

Contrast

#1e53be as textRatioAAAA largeAAAFix
Aaon white
6.92:1passpassfail
  • AAA: use #1d51b9 as the text (7.17:1)
Aaon black
3.04:1failpassfail
  • AA: use #3870e0 as the text (4.56:1)
  • AAA: use #6d96e8 as the text (7.18:1)
  • AA: or shift the background to #d1d1d1 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1e53be as the background.

Brands using this color

Fonts for this mood

#1e53be reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1e53be
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 #1e53be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1e53be-9ca5c4-df694e-211f2d-e9f0f1?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