Color

#636fbb

#636fbb
hex#636fbb
rgbrgb(99, 111, 187)
hslhsl(232, 39%, 56%)
oklchoklch(0.567 0.118 275.2)
Closest name: Loch Ness (#5f6db0)Relative luminance 0.1761

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bbaf63

#639abb · #8363bb

#bb636f · #6fbb63

Split-complementary

Open in tool →

#bb8363 · #9abb63

#bb639a · #bbaf63 · #63bb83

Contrast

#636fbb as textRatioAAAA largeAAAFix
Aaon white
4.64:1passpassfail
  • AAA: use #4652a0 as the text (7.06:1)
Aaon black
4.52:1passpassfail
  • AAA: use #8a93cc as the text (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 #636fbb 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

#636fbb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #636fbb
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 #636fbb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/636fbb-9c9dc4-df864e-231f2d-e9eef1?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