Color

#4258fa

#4258fa
hex#4258fa
rgbrgb(66, 88, 250)
hslhsl(233, 95%, 62%)
oklchoklch(0.55 0.24 270.2)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1504

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fae542

#42b4fa · #8942fa

#fa4258 · #58fa42

Split-complementary

Open in tool →

#fa8942 · #b4fa42

#fa42b4 · #fae542 · #42fa89

Contrast

#4258fa as textRatioAAAA largeAAAFix
Aaon white
5.24:1passpassfail
  • AAA: use #1a34f9 as the text (7.23:1)
Aaon black
4.01:1failpassfail
  • AA: use #5165fb as the text (4.6:1)
  • AAA: use #7e8cfc as the text (7.04:1)
  • AA: or shift the background to #f0f0f0 (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 #4258fa 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

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

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

tool url/palettes/new/4258fa-9c9cc4-df884e-241f2d-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