Color

#191fcc

#191fcc
hex#191fcc
rgbrgb(25, 31, 204)
hslhsl(238, 78%, 45%)
oklchoklch(0.407 0.248 267.2)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0555

Colors that go with #191fcc

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 →

#ccc619

#1979cc · #6d19cc

#cc191f · #1fcc19

Split-complementary

Open in tool →

#cc6d19 · #79cc19

#cc1979 · #ccc619 · #19cc6d

Contrast

#191fcc as textRatioAAAA largeAAAFix
Aaon white
9.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #6065eb as the text (4.56:1)
  • AAA: use #898cf0 as the text (7.07:1)
  • AA: or shift the background to #b0b0b0 (4.59:1)
  • AAA: or shift the background to #d9d9d9 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #191fcc 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

#191fcc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #191fcc
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 #191fcc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/191fcc-9f9cc4-df944e-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