Color

#3b0a8a

#3b0a8a
hex#3b0a8a
rgbrgb(59, 10, 138)
hslhsl(263, 86%, 29%)
oklchoklch(0.333 0.18 289)
Closest name: Indigo Static (#4b0183)Relative luminance 0.0298

Tints & shades

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

Harmonies

Complementary

Open in tool →

#598a0a

#0a198a · #7b0a8a

#8a3b0a · #0a8a3b

Split-complementary

Open in tool →

#8a7b0a · #198a0a

#8a0a19 · #598a0a · #0a8a7b

Contrast

#3b0a8a as textRatioAAAA largeAAAFix
Aaon white
13.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #8e50f2 as the text (4.58:1)
  • AAA: use #ac7ff5 as the text (7.11:1)
  • AA: or shift the background to #999999 (4.62:1)
  • AAA: or shift the background to #bdbdbd (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b0a8a 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

#3b0a8a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b0a8a
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 #3b0a8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b0a8a-b09cc4-dfd04e-2b1f2d-e9eaf1?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