Color

#366ca6

#366ca6
hex#366ca6
rgbrgb(54, 108, 166)
hslhsl(211, 51%, 43%)
oklchoklch(0.522 0.109 252.1)
Closest name: Campanula (#3473b7)Relative luminance 0.1426

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a67036

#36a4a6 · #3836a6

#a6366c · #6ca636

Split-complementary

Open in tool →

#a63836 · #a4a636

#a636a4 · #a67036 · #36a638

Contrast

#366ca6 as textRatioAAAA largeAAAFix
Aaon white
5.45:1passpassfail
  • AAA: use #2d5a8b as the text (7.13:1)
Aaon black
3.85:1failpassfail
  • AA: use #3c78b9 as the text (4.58:1)
  • AAA: use #699ace as the text (7.11:1)
  • AA: or shift the background to #ebebeb (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #366ca6 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

#366ca6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #366ca6
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 #366ca6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/366ca6-9cabc4-df534e-1f202d-e9f1f1?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