Color

#3365e6

#3365e6
hex#3365e6
rgbrgb(51, 101, 230)
hslhsl(223, 78%, 55%)
oklchoklch(0.55 0.203 264.5)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1572

Colors that go with #3365e6

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 →

#e6b333

#33bfe6 · #5a33e6

#e63365 · #65e633

Split-complementary

Open in tool →

#e65a33 · #bfe633

#e633bf · #e6b333 · #33e65a

Contrast

#3365e6 as textRatioAAAA largeAAAFix
Aaon white
5.07:1passpassfail
  • AAA: use #194ccc as the text (7.13:1)
Aaon black
4.14:1failpassfail
  • AA: use #4070e7 as the text (4.69:1)
  • AAA: use #7295ee as the text (7.25:1)
  • AA: or shift the background to #f2f2f2 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3365e6 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3365e6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3365e6
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 #3365e6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3365e6-9ca3c4-df704e-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