Color

#401b74

#401b74
hex#401b74
rgbrgb(64, 27, 116)
hslhsl(265, 62%, 28%)
oklchoklch(0.332 0.142 296.8)
Closest name: Explorer of the Galaxies (#3a1f76)Relative luminance 0.0313

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f741b

#1b2374 · #6c1b74

#74401b · #1b7440

Split-complementary

Open in tool →

#746c1b · #23741b

#741b23 · #4f741b · #1b746c

Contrast

#401b74 as textRatioAAAA largeAAAFix
Aaon white
12.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.63:1failfailfail
  • AA: use #8e5ad8 as the text (4.6:1)
  • AAA: use #ab83e2 as the text (7.08:1)
  • AA: or shift the background to #999999 (4.53:1)
  • AAA: or shift the background to #bfbfbf (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 #401b74 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

#401b74 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #401b74
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 #401b74 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/401b74-b19cc4-dfd54e-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