Color

#331c7d

#331c7d
hex#331c7d
rgbrgb(51, 28, 125)
hslhsl(254, 63%, 30%)
oklchoklch(0.328 0.152 285.3)
Closest name: Deep Space Rodeo (#332277)Relative luminance 0.0301

Tints & shades

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

Harmonies

Complementary

Open in tool →

#667d1c

#1c367d · #631c7d

#7d331c · #1c7d33

Split-complementary

Open in tool →

#7d631c · #367d1c

#7d1c36 · #667d1c · #1c7d63

Contrast

#331c7d as textRatioAAAA largeAAAFix
Aaon white
13.1:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #7e61db as the text (4.62:1)
  • AAA: use #a08be5 as the text (7.32:1)
  • AA: or shift the background to #999999 (4.6:1)
  • AAA: or shift the background to #bfbfbf (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331c7d 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

#331c7d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331c7d
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 #331c7d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331c7d-aa9cc4-dfbb4e-291f2d-e9ebf1?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