Color

#001fd1

#001fd1
hex#001fd1
rgbrgb(0, 31, 209)
hslhsl(231, 100%, 41%)
oklchoklch(0.408 0.257 264.2)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0558

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d1b200

#0088d1 · #4900d1

#d1001f · #1fd100

Split-complementary

Open in tool →

#d14900 · #88d100

#d10088 · #d1b200 · #00d149

Contrast

#001fd1 as textRatioAAAA largeAAAFix
Aaon white
9.92:1passpasspassPasses AAA — no fix needed.
Aaon black
2.12:1failfailfail
  • AA: use #4d67ff as the text (4.7:1)
  • AAA: use #7a8eff as the text (7.14:1)
  • AA: or shift the background to #b0b0b0 (4.57:1)
  • AAA: or shift the background to #d9d9d9 (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 #001fd1 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

#001fd1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #001fd1
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 #001fd1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/001fd1-9c9ec4-df834e-231f2d-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