Color

#0a42fa

#0a42fa
hex#0a42fa
rgbrgb(10, 66, 250)
hslhsl(226, 96%, 51%)
oklchoklch(0.5 0.272 264.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.1086

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fac20a

#0abafa · #4a0afa

#fa0a42 · #42fa0a

Split-complementary

Open in tool →

#fa4a0a · #bafa0a

#fa0aba · #fac20a · #0afa4a

Contrast

#0a42fa as textRatioAAAA largeAAAFix
Aaon white
6.62:1passpassfail
  • AAA: use #053df5 as the text (7.02:1)
Aaon black
3.17:1failpassfail
  • AA: use #3c69fb as the text (4.61:1)
  • AAA: use #7393fc as the text (7.31:1)
  • AA: or shift the background to #d6d6d6 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a42fa 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

#0a42fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a42fa
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 #0a42fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a42fa-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