Color

#0f23ff

#0f23ff
hex#0f23ff
rgbrgb(15, 35, 255)
hslhsl(235, 100%, 53%)
oklchoklch(0.471 0.3 265.1)
Closest name: blue (#0000ff)Relative luminance 0.0852

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ffeb0f

#0f9bff · #730fff

#ff0f23 · #23ff0f

Split-complementary

Open in tool →

#ff730f · #9bff0f

#ff0f9b · #ffeb0f · #0fff73

Contrast

#0f23ff as textRatioAAAA largeAAAFix
Aaon white
7.76:1passpasspassPasses AAA — no fix needed.
Aaon black
2.7:1failfailfail
  • AA: use #5765ff as the text (4.71:1)
  • AAA: use #858fff as the text (7.37:1)
  • AA: or shift the background to #c7c7c7 (4.59:1)
  • AAA: or shift the background to #f5f5f5 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f23ff as the background.

Brands using this color

Fonts for this mood

#0f23ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f23ff
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 #0f23ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f23ff-9e9cc4-df8d4e-241f2d-e9eef1?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