Color

#3617cf

#3617cf
hex#3617cf
rgbrgb(54, 23, 207)
hslhsl(250, 80%, 45%)
oklchoklch(0.418 0.248 274.7)
Closest name: Busty Blue (#3300cc)Relative luminance 0.059

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#b0cf17

#1754cf · #9117cf

#cf3617 · #17cf36

Split-complementary

Open in tool →

#cf9117 · #54cf17

#cf1754 · #b0cf17 · #17cf91

Contrast

#3617cf as textRatioAAAA largeAAAFix
Aaon white
9.63:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #765eed as the text (4.59:1)
  • AAA: use #9988f2 as the text (7.16:1)
  • AA: or shift the background to #b3b3b3 (4.59:1)
  • AAA: or shift the background to #dedede (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3617cf as the background.

Brands using this color

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

Fonts for this mood

#3617cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3617cf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3617cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3617cf-a79cc4-dfb14e-281f2d-e9ecf1?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