Color

#0a15e6

#0a15e6
hex#0a15e6
rgbrgb(10, 21, 230)
hslhsl(237, 92%, 47%)
oklchoklch(0.429 0.282 265)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.0631

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e6db0a

#0a83e6 · #6d0ae6

#e60a15 · #15e60a

Split-complementary

Open in tool →

#e66d0a · #83e60a

#e60a83 · #e6db0a · #0ae66d

Contrast

#0a15e6 as textRatioAAAA largeAAAFix
Aaon white
9.28:1passpasspassPasses AAA — no fix needed.
Aaon black
2.26:1failfailfail
  • AA: use #5d65f8 as the text (4.68:1)
  • AAA: use #858afa as the text (7.01:1)
  • AA: or shift the background to #b5b5b5 (4.53:1)
  • AAA: or shift the background to #e0e0e0 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a15e6 as the background.

Brands using this color

Fonts for this mood

#0a15e6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a15e6
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 #0a15e6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a15e6-9f9cc4-df924e-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