Color

#4275ff

#4275ff
hex#4275ff
rgbrgb(66, 117, 255)
hslhsl(224, 100%, 63%)
oklchoklch(0.606 0.213 265.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.211

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffcd42

#42d3ff · #6e42ff

#ff4275 · #75ff42

Split-complementary

Open in tool →

#ff6e42 · #d3ff42

#ff42d3 · #ffcd42 · #42ff6e

Contrast

#4275ff as textRatioAAAA largeAAAFix
Aaon white
4.02:1failpassfail
  • AA: use #3369ff as the text (4.56:1)
  • AAA: use #0040f0 as the text (7.02:1)
  • AA: or shift the background to #141414 (4.58:1)
Aaon black
5.22:1passpassfail
  • AAA: use #6b93ff as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4275ff 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

#4275ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4275ff
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 #4275ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4275ff-9ca2c4-df724e-221f2d-e9eff1?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