Color

#333f8a

#333f8a
hex#333f8a
rgbrgb(51, 63, 138)
hslhsl(232, 46%, 37%)
oklchoklch(0.401 0.125 272.7)
Closest name: Evening Magic (#363e7d)Relative luminance 0.0609

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8a7e33

#336a8a · #53338a

#8a333f · #3f8a33

Split-complementary

Open in tool →

#8a5333 · #6a8a33

#8a336a · #8a7e33 · #338a53

Contrast

#333f8a as textRatioAAAA largeAAAFix
Aaon white
9.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.22:1failfailfail
  • AA: use #6370c5 as the text (4.65:1)
  • AAA: use #8892d3 as the text (7.1:1)
  • AA: or shift the background to #b3b3b3 (4.51:1)
  • AAA: or shift the background to #dedede (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #333f8a 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

#333f8a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #333f8a
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 #333f8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/333f8a-9c9dc4-df864e-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