Color

#3d63eb

#3d63eb
hex#3d63eb
rgbrgb(61, 99, 235)
hslhsl(227, 81%, 58%)
oklchoklch(0.554 0.21 267.2)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1591

Colors that go with #3d63eb

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 →

#ebc53d

#3db9eb · #6e3deb

#eb3d63 · #63eb3d

Split-complementary

Open in tool →

#eb6e3d · #b9eb3d

#eb3db9 · #ebc53d · #3deb6e

Contrast

#3d63eb as textRatioAAAA largeAAAFix
Aaon white
5.02:1passpassfail
  • AAA: use #1844e2 as the text (7.09:1)
Aaon black
4.18:1failpassfail
  • AA: use #466aec as the text (4.53:1)
  • AAA: use #7993f1 as the text (7.26:1)
  • AA: or shift the background to #f5f5f5 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d63eb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#3d63eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d63eb
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 #3d63eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d63eb-9ca0c4-df7a4e-221f2d-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