Color

#0731bb

#0731bb
hex#0731bb
rgbrgb(7, 49, 187)
hslhsl(226, 93%, 38%)
oklchoklch(0.405 0.217 264.3)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0583

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb9107

#078bbb · #3707bb

#bb0731 · #31bb07

Split-complementary

Open in tool →

#bb3707 · #8bbb07

#bb078b · #bb9107 · #07bb37

Contrast

#0731bb as textRatioAAAA largeAAAFix
Aaon white
9.7:1passpasspassPasses AAA — no fix needed.
Aaon black
2.17:1failfailfail
  • AA: use #3f6af8 as the text (4.63:1)
  • AAA: use #7090fa as the text (7.06:1)
  • AA: or shift the background to #b3b3b3 (4.62:1)
  • AAA: or shift the background to #dbdbdb (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0731bb 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

#0731bb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0731bb
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 #0731bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0731bb-9ca1c4-df774e-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