Color

#423abb

#423abb
hex#423abb
rgbrgb(66, 58, 187)
hslhsl(244, 53%, 48%)
oklchoklch(0.445 0.194 277.7)
Closest name: Denim (#2243b6)Relative luminance 0.0777

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b3bb3a

#3a72bb · #833abb

#bb423a · #3abb42

Split-complementary

Open in tool →

#bb833a · #72bb3a

#bb3a72 · #b3bb3a · #3abb83

Contrast

#423abb as textRatioAAAA largeAAAFix
Aaon white
8.22:1passpasspassPasses AAA — no fix needed.
Aaon black
2.55:1failfailfail
  • AA: use #6e67d0 as the text (4.51:1)
  • AAA: use #938edc as the text (7.14:1)
  • AA: or shift the background to #c2c2c2 (4.62:1)
  • AAA: or shift the background to #ededed (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #423abb 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

#423abb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #423abb
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 #423abb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/423abb-a39cc4-dfa24e-261f2d-e9edf1?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