Color

#33668a

#33668a
hex#33668a
rgbrgb(51, 102, 138)
hslhsl(205, 46%, 37%)
oklchoklch(0.491 0.08 241.6)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1204

Colors that go with #33668a

Charcoal, Royal Blue and Sienna lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8a5733

#338a83 · #333a8a

#8a3366 · #668a33

Split-complementary

Open in tool →

#8a333a · #8a8333

#83338a · #8a5733 · #3a8a33

Contrast

#33668a as textRatioAAAA largeAAAFix
Aaon white
6.16:1passpassfail
  • AAA: use #2f5d7f as the text (7.02:1)
Aaon black
3.41:1failpassfail
  • AA: use #3e7ca8 as the text (4.65:1)
  • AAA: use #639cc5 as the text (7.09:1)
  • AA: or shift the background to #dedede (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #33668a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#33668a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #33668a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #33668a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/33668a-9cafc4-df4e58-1f212d-e9f1f0?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