Color

#1859f2

#1859f2
hex#1859f2
rgbrgb(24, 89, 242)
hslhsl(222, 89%, 52%)
oklchoklch(0.531 0.238 263.2)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1375

Colors that go with #1859f2

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 →

#f2b018

#18c6f2 · #4318f2

#f21859 · #59f218

Split-complementary

Open in tool →

#f24318 · #c6f218

#f218c6 · #f2b018 · #18f243

Contrast

#1859f2 as textRatioAAAA largeAAAFix
Aaon white
5.6:1passpassfail
Aaon black
3.75:1failpassfail
  • AA: use #356ef3 as the text (4.68:1)
  • AAA: use #6a94f6 as the text (7.18:1)
  • AA: or shift the background to #e8e8e8 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1859f2 as the background.

Brands using this color

Fonts for this mood

#1859f2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1859f2
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 #1859f2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1859f2-9ca3c4-df6e4e-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