Color

#4258eb

#4258eb
hex#4258eb
rgbrgb(66, 88, 235)
hslhsl(232, 81%, 59%)
oklchoklch(0.537 0.221 270.4)
Closest name: Arcane Brew (#5260e1)Relative luminance 0.1414

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ebd542

#42adeb · #8042eb

#eb4258 · #58eb42

Split-complementary

Open in tool →

#eb8042 · #adeb42

#eb42ad · #ebd542 · #42eb80

Contrast

#4258eb as textRatioAAAA largeAAAFix
Aaon white
5.49:1passpassfail
  • AAA: use #2640e8 as the text (7.04:1)
Aaon black
3.83:1failpassfail
  • AA: use #5469ed as the text (4.62:1)
  • AAA: use #8291f2 as the text (7.28:1)
  • AA: or shift the background to #ebebeb (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 #4258eb 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

#4258eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4258eb
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 #4258eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4258eb-9c9dc4-df864e-231f2d-e9eef1?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