Color

#490381

#490381
hex#490381
rgbrgb(73, 3, 129)
hslhsl(273, 95%, 26%)
oklchoklch(0.337 0.176 300.7)
Closest name: indigo (#4b0082)Relative luminance 0.0307

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3c8103

#0a0381 · #81037b

#814903 · #038149

Split-complementary

Open in tool →

#7b8103 · #03810a

#810a03 · #3c8103 · #037b81

Contrast

#490381 as textRatioAAAA largeAAAFix
Aaon white
13.02:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #a338fa as the text (4.5:1)
  • AAA: use #be74fb as the text (7.08:1)
  • AA: or shift the background to #999999 (4.57:1)
  • AAA: or shift the background to #bfbfbf (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #490381 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

#490381 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #490381
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 #490381 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/490381-b79cc4-c4cb62-2d1f2d-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