Color

#1f63ea

#1f63ea
hex#1f63ea
rgbrgb(31, 99, 234)
hslhsl(220, 83%, 52%)
oklchoklch(0.544 0.215 262.1)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1516

Colors that go with #1f63ea

Crimson, Deep Sky Blue and Orange Red 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 →

#eaa61f

#1fc8ea · #411fea

#ea1f63 · #63ea1f

Split-complementary

Open in tool →

#ea411f · #c8ea1f

#ea1fc8 · #eaa61f · #1fea41

Contrast

#1f63ea as textRatioAAAA largeAAAFix
Aaon white
5.21:1passpassfail
  • AAA: use #134fc9 as the text (7.02:1)
Aaon black
4.03:1failpassfail
  • AA: use #3270ec as the text (4.66:1)
  • AAA: use #6594f1 as the text (7.06:1)
  • AA: or shift the background to #f0f0f0 (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 #1f63ea as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1f63ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f63ea
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 #1f63ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f63ea-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