Color

#633dbd

#633dbd
hex#633dbd
rgbrgb(99, 61, 189)
hslhsl(258, 51%, 49%)
oklchoklch(0.479 0.189 291.2)
Closest name: Blurple (#5539cc)Relative luminance 0.0966

Tints & shades

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

Harmonies

Complementary

Open in tool →

#96bd3d

#3d57bd · #a33dbd

#bd633d · #3dbd63

Split-complementary

Open in tool →

#bda33d · #57bd3d

#bd3d57 · #96bd3d · #3dbda3

Contrast

#633dbd as textRatioAAAA largeAAAFix
Aaon white
7.16:1passpasspassPasses AAA — no fix needed.
Aaon black
2.93:1failfailfail
  • AA: use #8161cc as the text (4.52:1)
  • AAA: use #a088d8 as the text (7.01:1)
  • AA: or shift the background to #cfcfcf (4.6:1)
  • AAA: or shift the background to #ffffff (7.16:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/633dbd-ad9cc4-dfc44e-291f2d-e9ebf1?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