Color

#423ff3

#423ff3
hex#423ff3
rgbrgb(66, 63, 243)
hslhsl(241, 88%, 60%)
oklchoklch(0.506 0.256 273.1)
Closest name: Meteor Shower (#5533ff)Relative luminance 0.1118

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f0f33f

#3f96f3 · #9c3ff3

#f3423f · #3ff342

Split-complementary

Open in tool →

#f39c3f · #96f33f

#f33f96 · #f0f33f · #3ff39c

Contrast

#423ff3 as textRatioAAAA largeAAAFix
Aaon white
6.49:1passpassfail
  • AAA: use #3936f2 as the text (7.04:1)
Aaon black
3.24:1failpassfail
  • AA: use #6361f5 as the text (4.56:1)
  • AAA: use #8e8cf8 as the text (7.26:1)
  • AA: or shift the background to #d9d9d9 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #423ff3 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

#423ff3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #423ff3
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 #423ff3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/423ff3-a19cc4-df9b4e-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