Color

#190dfd

#190dfd
hex#190dfd
rgbrgb(25, 13, 253)
hslhsl(243, 98%, 52%)
oklchoklch(0.458 0.305 266.2)
Closest name: blue (#0000ff)Relative luminance 0.0759

Colors that go with #190dfd

Charcoal, Crimson and Cobalt 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 →

#f1fd0d

#0d79fd · #910dfd

#fd190d · #0dfd19

Split-complementary

Open in tool →

#fd910d · #79fd0d

#fd0d79 · #f1fd0d · #0dfd91

Contrast

#190dfd as textRatioAAAA largeAAAFix
Aaon white
8.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.52:1failfailfail
  • AA: use #655dfd as the text (4.54:1)
  • AAA: use #918bfe as the text (7.33:1)
  • AA: or shift the background to #bfbfbf (4.54:1)
  • AAA: or shift the background to #ededed (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #190dfd as the background.

Brands using this color

Fonts for this mood

#190dfd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #190dfd
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 #190dfd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/190dfd-a39cc4-dfa04e-261f2d-e9edf1?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