Color

#331c6d

#331c6d
hex#331c6d
rgbrgb(51, 28, 109)
hslhsl(257, 59%, 27%)
oklchoklch(0.312 0.131 289.5)
Closest name: Dark Dreams (#332266)Relative luminance 0.0264

Tints & shades

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

Harmonies

Complementary

Open in tool →

#566d1c

#1c2e6d · #5c1c6d

#6d331c · #1c6d33

Split-complementary

Open in tool →

#6d5c1c · #2e6d1c

#6d1c2e · #566d1c · #1c6d5c

Contrast

#331c6d as textRatioAAAA largeAAAFix
Aaon white
13.75:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #8261d6 as the text (4.63:1)
  • AAA: use #a289e1 as the text (7.2:1)
  • AA: or shift the background to #949494 (4.53:1)
  • AAA: or shift the background to #bababa (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331c6d 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

#331c6d reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331c6d
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 #331c6d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331c6d-ac9cc4-dfc24e-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