Color

#3150bf

#3150bf
hex#3150bf
rgbrgb(49, 80, 191)
hslhsl(227, 59%, 47%)
oklchoklch(0.477 0.178 267.3)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1015

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bfa031

#3196bf · #5931bf

#bf3150 · #50bf31

Split-complementary

Open in tool →

#bf5931 · #96bf31

#bf3196 · #bfa031 · #31bf59

Contrast

#3150bf as textRatioAAAA largeAAAFix
Aaon white
6.93:1passpassfail
  • AAA: use #304ebb as the text (7.16:1)
Aaon black
3.03:1failpassfail
  • AA: use #5570d3 as the text (4.64:1)
  • AAA: use #7d92de as the text (7.04:1)
  • AA: or shift the background to #d1d1d1 (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 #3150bf 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

#3150bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3150bf
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 #3150bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3150bf-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