Color

#3d88eb

#3d88eb
hex#3d88eb
rgbrgb(61, 136, 235)
hslhsl(214, 81%, 58%)
oklchoklch(0.629 0.167 256.5)
Closest name: Blue Jay (#5588dd)Relative luminance 0.246

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eb9f3d

#3ddfeb · #493deb

#eb3d88 · #88eb3d

Split-complementary

Open in tool →

#eb493d · #dfeb3d

#eb3ddf · #eb9f3d · #3deb49

Contrast

#3d88eb as textRatioAAAA largeAAAFix
Aaon white
3.55:1failpassfail
  • AA: use #1872e7 as the text (4.57:1)
  • AAA: use #1256af as the text (7.06:1)
  • AA: or shift the background to #212121 (4.54:1)
Aaon black
5.92:1passpassfail
  • AAA: use #5999ee as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d88eb 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

#3d88eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d88eb
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 #3d88eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d88eb-9ca9c4-df5a4e-1f1f2d-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