Color

#3154d3

#3154d3
hex#3154d3
rgbrgb(49, 84, 211)
hslhsl(227, 65%, 51%)
oklchoklch(0.501 0.199 266.9)
Closest name: Denim (#1560bd)Relative luminance 0.117

Colors that go with #3154d3

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 →

#d3b031

#31a5d3 · #5f31d3

#d33154 · #54d331

Split-complementary

Open in tool →

#d35f31 · #a5d331

#d331a5 · #d3b031 · #31d35f

Contrast

#3154d3 as textRatioAAAA largeAAAFix
Aaon white
6.29:1passpassfail
  • AAA: use #2a4cc6 as the text (7.12:1)
Aaon black
3.34:1failpassfail
  • AA: use #5270da as the text (4.69:1)
  • AAA: use #7d93e3 as the text (7.15:1)
  • AA: or shift the background to #dbdbdb (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3154d3 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

#3154d3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3154d3
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 #3154d3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3154d3-9ca0c4-df7a4e-221f2d-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