Color

#3972d5

#3972d5
hex#3972d5
rgbrgb(57, 114, 213)
hslhsl(218, 65%, 53%)
oklchoklch(0.566 0.164 260.6)
Closest name: Royal Blue (#4169e1)Relative luminance 0.1771

Colors that go with #3972d5

Charcoal, Sea Green 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 →

#d59c39

#39c0d5 · #4e39d5

#d53972 · #72d539

Split-complementary

Open in tool →

#d54e39 · #c0d539

#d539c0 · #d59c39 · #39d54e

Contrast

#3972d5 as textRatioAAAA largeAAAFix
Aaon white
4.62:1passpassfail
  • AAA: use #2454a8 as the text (7.22:1)
Aaon black
4.54:1passpassfail
  • AAA: use #6c96e0 as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3972d5 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

#3972d5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3972d5
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 #3972d5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3972d5-9ca6c4-df644e-201f2d-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