Color

#3d74eb

#3d74eb
hex#3d74eb
rgbrgb(61, 116, 235)
hslhsl(221, 81%, 58%)
oklchoklch(0.587 0.189 263.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.1948

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ebb43d

#3dcbeb · #5d3deb

#eb3d74 · #74eb3d

Split-complementary

Open in tool →

#eb5d3d · #cbeb3d

#eb3dcb · #ebb43d · #3deb5d

Contrast

#3d74eb as textRatioAAAA largeAAAFix
Aaon white
4.29:1failpassfail
  • AA: use #346dea as the text (4.64:1)
  • AAA: use #154dc6 as the text (7.22:1)
  • AA: or shift the background to #0d0d0d (4.53:1)
Aaon black
4.9:1passpassfail
  • 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 #3d74eb 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

#3d74eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d74eb
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 #3d74eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d74eb-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