Color

#4d81ea

#4d81ea
hex#4d81ea
rgbrgb(77, 129, 234)
hslhsl(220, 79%, 61%)
oklchoklch(0.62 0.168 262.7)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2322

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eab64d

#4dd0ea · #674dea

#ea4d81 · #81ea4d

Split-complementary

Open in tool →

#ea674d · #d0ea4d

#ea4dd0 · #eab64d · #4dea67

Contrast

#4d81ea as textRatioAAAA largeAAAFix
Aaon white
3.72:1failpassfail
  • AA: use #326ee7 as the text (4.65:1)
  • AAA: use #164fc0 as the text (7.21:1)
  • AA: or shift the background to #1c1c1c (4.58:1)
Aaon black
5.64:1passpassfail
  • AAA: use #6895ed as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4d81ea 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

#4d81ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4d81ea
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 #4d81ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4d81ea-9ca5c4-df694e-211f2d-e9f0f1?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