Color

#6553ca

#6553ca
hex#6553ca
rgbrgb(101, 83, 202)
hslhsl(249, 53%, 56%)
oklchoklch(0.525 0.177 285.5)
Closest name: slateblue (#6a5acd)Relative luminance 0.1322

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b8ca53

#537dca · #a153ca

#ca6553 · #53ca65

Split-complementary

Open in tool →

#caa153 · #7dca53

#ca537d · #b8ca53 · #53caa1

Contrast

#6553ca as textRatioAAAA largeAAAFix
Aaon white
5.76:1passpassfail
  • AAA: use #5440c4 as the text (7.22:1)
Aaon black
3.64:1failpassfail
  • AA: use #7767d0 as the text (4.64:1)
  • AAA: use #9a8edc as the text (7.28:1)
  • AA: or shift the background to #e6e6e6 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6553ca 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

#6553ca reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6553ca
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 #6553ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6553ca-a79cc4-dfae4e-271f2d-e9ecf1?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