Color

#333366

#333366
hex#333366
rgbrgb(51, 51, 102)
hslhsl(240, 33%, 30%)
oklchoklch(0.349 0.087 280.9)
Closest name: Deep Sea Base (#2c2c57)Relative luminance 0.0403

Tints & shades

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

Harmonies

Complementary

Open in tool →

#666633

#334d66 · #4d3366

#663333 · #336633

Split-complementary

Open in tool →

#664d33 · #4d6633

#66334d · #666633 · #33664d

Contrast

#333366 as textRatioAAAA largeAAAFix
Aaon white
11.63:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #6d6db6 as the text (4.51:1)
  • AAA: use #9292c8 as the text (7.17:1)
  • AA: or shift the background to #a1a1a1 (4.5:1)
  • AAA: or shift the background to #c9c9c9 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #333366 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

#333366 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #333366
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 #333366 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/333366-a19cc4-df994e-251f2d-e9edf1?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