Color

#0131df

#0131df
hex#0131df
rgbrgb(1, 49, 223)
hslhsl(227, 99%, 44%)
oklchoklch(0.445 0.258 264.1)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0753

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dfaf01

#01a0df · #4001df

#df0131 · #31df01

Split-complementary

Open in tool →

#df4001 · #a0df01

#df01a0 · #dfaf01 · #01df40

Contrast

#0131df as textRatioAAAA largeAAAFix
Aaon white
8.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.51:1failfailfail
  • AA: use #3e68fe as the text (4.62:1)
  • AAA: use #7190fe as the text (7.12:1)
  • AA: or shift the background to #bfbfbf (4.56:1)
  • AAA: or shift the background to #ebebeb (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 #0131df 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

#0131df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0131df
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 #0131df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0131df-9ca0c4-df7a4e-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