Color

#0a5afa

#0a5afa
hex#0a5afa
rgbrgb(10, 90, 250)
hslhsl(220, 96%, 51%)
oklchoklch(0.538 0.248 262.5)
Closest name: Blue Ribbon (#0066ff)Relative luminance 0.1428

Tints & shades

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

Harmonies

Complementary

Open in tool →

#faaa0a

#0ad2fa · #320afa

#fa0a5a · #5afa0a

Split-complementary

Open in tool →

#fa320a · #d2fa0a

#fa0ad2 · #faaa0a · #0afa32

Contrast

#0a5afa as textRatioAAAA largeAAAFix
Aaon white
5.45:1passpassfail
  • AAA: use #044bd7 as the text (7.02:1)
Aaon black
3.86:1failpassfail
  • AA: use #236bfb as the text (4.57:1)
  • AAA: use #5f93fc as the text (7.07:1)
  • AA: or shift the background to #ebebeb (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a5afa as the background.

Brands using this color

Fonts for this mood

#0a5afa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a5afa
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 #0a5afa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a5afa-9ca5c4-df694e-211f2d-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