Color

#3f2bda

#3f2bda
hex#3f2bda
rgbrgb(63, 43, 218)
hslhsl(247, 70%, 51%)
oklchoklch(0.455 0.245 275.5)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0785

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c5da2b

#2b6eda · #962bda

#da3f2b · #2bda3f

Split-complementary

Open in tool →

#da962b · #6eda2b

#da2b6e · #c5da2b · #2bda96

Contrast

#3f2bda as textRatioAAAA largeAAAFix
Aaon white
8.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.57:1failfailfail
  • AA: use #7263e3 as the text (4.61:1)
  • AAA: use #958aea as the text (7.1:1)
  • AA: or shift the background to #c2c2c2 (4.59:1)
  • AAA: or shift the background to #f0f0f0 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f2bda 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

#3f2bda reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f2bda
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 #3f2bda and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f2bda-a59cc4-dfaa4e-271f2d-e9ecf1?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