Color

#4077dd

#4077dd
hex#4077dd
rgbrgb(64, 119, 221)
hslhsl(219, 70%, 56%)
oklchoklch(0.585 0.167 261.5)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.195

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dda640

#40c6dd · #5840dd

#dd4077 · #77dd40

Split-complementary

Open in tool →

#dd5840 · #c6dd40

#dd40c6 · #dda640 · #40dd58

Contrast

#4077dd as textRatioAAAA largeAAAFix
Aaon white
4.28:1failpassfail
  • AA: use #3871dc as the text (4.6:1)
  • AAA: use #1f53b2 as the text (7.15:1)
  • AA: or shift the background to #0d0d0d (4.54:1)
Aaon black
4.9:1passpassfail
  • AAA: use #6c96e5 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4077dd 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

#4077dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4077dd
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 #4077dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4077dd-9ca5c4-df664e-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