Color

#1c28ce

#1c28ce
hex#1c28ce
rgbrgb(28, 40, 206)
hslhsl(236, 76%, 46%)
oklchoklch(0.42 0.243 267.4)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0622

Colors that go with #1c28ce

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 →

#cec31c

#1c81ce · #691cce

#ce1c28 · #28ce1c

Split-complementary

Open in tool →

#ce691c · #81ce1c

#ce1c81 · #cec31c · #1cce69

Contrast

#1c28ce as textRatioAAAA largeAAAFix
Aaon white
9.36:1passpasspassPasses AAA — no fix needed.
Aaon black
2.24:1failfailfail
  • AA: use #5d67e9 as the text (4.58:1)
  • AAA: use #868dee as the text (7.06:1)
  • AA: or shift the background to #b5b5b5 (4.56:1)
  • AAA: or shift the background to #e0e0e0 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1c28ce as the background.

Brands using this color

Fonts for this mood

#1c28ce reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1c28ce
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 #1c28ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1c28ce-9e9cc4-df8f4e-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