Color

#400080

#400080
hex#400080
rgbrgb(64, 0, 128)
hslhsl(270, 100%, 25%)
oklchoklch(0.322 0.176 295.8)
Closest name: indigo (#4b0082)Relative luminance 0.0265

Tints & shades

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

Harmonies

Complementary

Open in tool →

#408000

#000080 · #800080

#804000 · #008040

Split-complementary

Open in tool →

#808000 · #008000

#800000 · #408000 · #008080

Contrast

#400080 as textRatioAAAA largeAAAFix
Aaon white
13.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #9e3dff as the text (4.57:1)
  • AAA: use #ba75ff as the text (7.08:1)
  • AA: or shift the background to #949494 (4.53:1)
  • AAA: or shift the background to #bababa (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #400080 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

#400080 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #400080
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 #400080 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/400080-b59cc4-c9cb62-2c1f2d-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