Color

#3a88ee

#3a88ee
hex#3a88ee
rgbrgb(58, 136, 238)
hslhsl(214, 84%, 58%)
oklchoklch(0.63 0.171 256.5)
Closest name: dodgerblue (#1e90ff)Relative luminance 0.2468

Colors that go with #3a88ee

Charcoal, Crimson and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eea03a

#3ae2ee · #463aee

#ee3a88 · #88ee3a

Split-complementary

Open in tool →

#ee463a · #e2ee3a

#ee3ae2 · #eea03a · #3aee46

Contrast

#3a88ee as textRatioAAAA largeAAAFix
Aaon white
3.54:1failpassfail
  • AA: use #1471eb as the text (4.57:1)
  • AAA: use #1056b2 as the text (7.01:1)
  • AA: or shift the background to #212121 (4.55:1)
Aaon black
5.94:1passpassfail
  • AAA: use #5699f0 as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a88ee 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

#3a88ee reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a88ee
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3a88ee and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a88ee-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