Color

#3980d0

#3980d0
hex#3980d0
rgbrgb(57, 128, 208)
hslhsl(212, 62%, 52%)
oklchoklch(0.594 0.142 253.6)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.2086

Colors that go with #3980d0

Charcoal, Copper 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 →

#d08a39

#39cbd0 · #3e39d0

#d03980 · #80d039

Split-complementary

Open in tool →

#d03e39 · #cbd039

#d039cb · #d08a39 · #39d03e

Contrast

#3980d0 as textRatioAAAA largeAAAFix
Aaon white
4.06:1failpassfail
  • AA: use #2f78ca as the text (4.51:1)
  • AAA: use #245a99 as the text (7.01:1)
  • AA: or shift the background to #141414 (4.54:1)
Aaon black
5.17:1passpassfail
  • AAA: use #629ada as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3980d0 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

#3980d0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3980d0
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 #3980d0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3980d0-9caac4-df564e-1f202d-e9f1f1?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