Color

#4277eb

#4277eb
hex#4277eb
rgbrgb(66, 119, 235)
hslhsl(221, 81%, 59%)
oklchoklch(0.595 0.184 263.4)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2035

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ebb642

#42cceb · #6142eb

#eb4277 · #77eb42

Split-complementary

Open in tool →

#eb6142 · #cceb42

#eb42cc · #ebb642 · #42eb61

Contrast

#4277eb as textRatioAAAA largeAAAFix
Aaon white
4.14:1failpassfail
  • AA: use #346dea as the text (4.64:1)
  • AAA: use #154dc6 as the text (7.22:1)
  • AA: or shift the background to #121212 (4.52:1)
Aaon black
5.07:1passpassfail
  • AAA: use #6b95ef as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4277eb 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

#4277eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4277eb
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 #4277eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4277eb-9ca4c4-df6b4e-211f2d-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