Color

#6370bb

#6370bb
hex#6370bb
rgbrgb(99, 112, 187)
hslhsl(231, 39%, 56%)
oklchoklch(0.569 0.117 274.7)
Closest name: Loch Ness (#5f6db0)Relative luminance 0.1783

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bbad63

#639cbb · #8263bb

#bb6370 · #70bb63

Split-complementary

Open in tool →

#bb8263 · #9cbb63

#bb639c · #bbad63 · #63bb82

Contrast

#6370bb as textRatioAAAA largeAAAFix
Aaon white
4.6:1passpassfail
  • AAA: use #44529c as the text (7.16:1)
Aaon black
4.57:1passpassfail
  • AAA: use #8a94cc as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6370bb 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

#6370bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6370bb
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 #6370bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6370bb-9c9ec4-df834e-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