Color

#1839e2

#1839e2
hex#1839e2
rgbrgb(24, 57, 226)
hslhsl(230, 81%, 49%)
oklchoklch(0.463 0.252 265.8)
Closest name: Bluebonnet (#1c1cf0)Relative luminance 0.0861

Colors that go with #1839e2

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 →

#e2c018

#189fe2 · #5b18e2

#e21839 · #39e218

Split-complementary

Open in tool →

#e25b18 · #9fe218

#e2189f · #e2c018 · #18e25b

Contrast

#1839e2 as textRatioAAAA largeAAAFix
Aaon white
7.71:1passpasspassPasses AAA — no fix needed.
Aaon black
2.72:1failfailfail
  • AA: use #506aed as the text (4.63:1)
  • AAA: use #7e91f1 as the text (7.21:1)
  • AA: or shift the background to #c7c7c7 (4.56:1)
  • AAA: or shift the background to #f5f5f5 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1839e2 as the background.

Brands using this color

Fonts for this mood

#1839e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1839e2
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 #1839e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1839e2-9c9ec4-df814e-231f2d-e9eef1?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