Color

#6377bf

#6377bf
hex#6377bf
rgbrgb(99, 119, 191)
hslhsl(227, 42%, 57%)
oklchoklch(0.585 0.113 270.8)
Closest name: Flood (#6677bb)Relative luminance 0.1961

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bfab63

#63a5bf · #7d63bf

#bf6377 · #77bf63

Split-complementary

Open in tool →

#bf7d63 · #a5bf63

#bf63a5 · #bfab63 · #63bf7d

Contrast

#6377bf as textRatioAAAA largeAAAFix
Aaon white
4.27:1failpassfail
  • AA: use #5c71bc as the text (4.62:1)
  • AAA: use #40549c as the text (7.08:1)
  • AA: or shift the background to #0d0d0d (4.55:1)
Aaon black
4.92:1passpassfail
  • AAA: use #8494cd as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6377bf 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

#6377bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6377bf
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 #6377bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6377bf-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