Color

#1f1cd4

#1f1cd4
hex#1f1cd4
rgbrgb(31, 28, 212)
hslhsl(241, 77%, 47%)
oklchoklch(0.416 0.257 268.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0588

Colors that go with #1f1cd4

Charcoal, Crimson and Cornflower Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d1d41c

#1c75d4 · #7b1cd4

#d41f1c · #1cd41f

Split-complementary

Open in tool →

#d47b1c · #75d41c

#d41c75 · #d1d41c · #1cd47b

Contrast

#1f1cd4 as textRatioAAAA largeAAAFix
Aaon white
9.65:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #6866eb as the text (4.69:1)
  • AAA: use #908ef0 as the text (7.31:1)
  • AA: or shift the background to #b3b3b3 (4.6:1)
  • AAA: or shift the background to #dedede (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f1cd4 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

#1f1cd4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f1cd4
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #1f1cd4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f1cd4-a19cc4-df9b4e-261f2d-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