Color

#331a47

#331a47
hex#331a47
rgbrgb(51, 26, 71)
hslhsl(273, 46%, 19%)
oklchoklch(0.276 0.083 307.5)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.019

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2e471a

#1c1a47 · #471a45

#47331a · #1a4733

Split-complementary

Open in tool →

#45471a · #1a471c

#471c1a · #2e471a · #1a4547

Contrast

#331a47 as textRatioAAAA largeAAAFix
Aaon white
15.22:1passpasspassPasses AAA — no fix needed.
Aaon black
1.38:1failfailfail
  • AA: use #945bc2 as the text (4.53:1)
  • AAA: use #af84d2 as the text (7.05:1)
  • AA: or shift the background to #8c8c8c (4.53:1)
  • AAA: or shift the background to #b0b0b0 (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 #331a47 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#331a47 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331a47
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 #331a47 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331a47-b79cc4-c4cb62-2d1f2d-eae9f1?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