Color

#331971

#331971
hex#331971
rgbrgb(51, 25, 113)
hslhsl(258, 64%, 27%)
oklchoklch(0.312 0.14 289.1)
Closest name: Deep Space Rodeo (#332277)Relative luminance 0.0259

Tints & shades

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

Harmonies

Complementary

Open in tool →

#567119

#192a71 · #5f1971

#713319 · #197133

Split-complementary

Open in tool →

#715f19 · #2a7119

#71192a · #567119 · #19715f

Contrast

#331971 as textRatioAAAA largeAAAFix
Aaon white
13.83:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #825cdb as the text (4.5:1)
  • AAA: use #a286e4 as the text (7.07:1)
  • AA: or shift the background to #949494 (4.56:1)
  • AAA: or shift the background to #bababa (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331971 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

#331971 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331971
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 #331971 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331971-ad9cc4-dfc44e-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