Color

#3a0b51

#3a0b51
hex#3a0b51
rgbrgb(58, 11, 81)
hslhsl(280, 76%, 18%)
oklchoklch(0.274 0.12 311.3)
Closest name: Romanic Scene (#3b0346)Relative luminance 0.0173

Tints & shades

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

Harmonies

Complementary

Open in tool →

#22510b

#170b51 · #510b45

#513a0b · #0b513a

Split-complementary

Open in tool →

#45510b · #0b5117

#51170b · #22510b · #0b4551

Contrast

#3a0b51 as textRatioAAAA largeAAAFix
Aaon white
15.59:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #ad3ee5 as the text (4.6:1)
  • AAA: use #c474ec as the text (7.06:1)
  • AA: or shift the background to #8a8a8a (4.52:1)
  • AAA: or shift the background to #b0b0b0 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a0b51 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

#3a0b51 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a0b51
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 #3a0b51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a0b51-b99fc1-b8cb62-2d1f2c-ebe9f1?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