Color

#633d8a

#633d8a
hex#633d8a
rgbrgb(99, 61, 138)
hslhsl(270, 39%, 39%)
oklchoklch(0.441 0.126 304.5)
Closest name: Lords of the Night (#664488)Relative luminance 0.0783

Tints & shades

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

Harmonies

Complementary

Open in tool →

#638a3d

#3d3d8a · #8a3d8a

#8a633d · #3d8a63

Split-complementary

Open in tool →

#8a8a3d · #3d8a3d

#8a3d3d · #638a3d · #3d8a8a

Contrast

#633d8a as textRatioAAAA largeAAAFix
Aaon white
8.19:1passpasspassPasses AAA — no fix needed.
Aaon black
2.57:1failfailfail
  • AA: use #8f63bb as the text (4.67:1)
  • AAA: use #ab8acc as the text (7.24:1)
  • AA: or shift the background to #c2c2c2 (4.6:1)
  • AAA: or shift the background to #f0f0f0 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #633d8a 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

#633d8a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #633d8a
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 #633d8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/633d8a-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