Color

#0a0aff

#0a0aff
hex#0a0aff
rgbrgb(10, 10, 255)
hslhsl(240, 100%, 52%)
oklchoklch(0.457 0.31 264.7)
Closest name: blue (#0000ff)Relative luminance 0.075

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffff0a

#0a85ff · #850aff

#ff0a0a · #0aff0a

Split-complementary

Open in tool →

#ff850a · #85ff0a

#ff0a85 · #ffff0a · #0aff85

Contrast

#0a0aff as textRatioAAAA largeAAAFix
Aaon white
8.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.5:1failfailfail
  • AA: use #6161ff as the text (4.66:1)
  • AAA: use #8a8aff as the text (7.16:1)
  • AA: or shift the background to #bfbfbf (4.57:1)
  • AAA: or shift the background to #ebebeb (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a0aff as the background.

Brands using this color

Fonts for this mood

#0a0aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a0aff
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 #0a0aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a0aff-a19cc4-df994e-251f2d-e9edf1?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