Color

#181ec3

#181ec3
hex#181ec3
rgbrgb(24, 30, 195)
hslhsl(238, 78%, 43%)
oklchoklch(0.394 0.239 267.3)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0506

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c3bd18

#1873c3 · #6818c3

#c3181e · #1ec318

Split-complementary

Open in tool →

#c36818 · #73c318

#c31873 · #c3bd18 · #18c368

Contrast

#181ec3 as textRatioAAAA largeAAAFix
Aaon white
10.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #6065eb as the text (4.56:1)
  • AAA: use #898cf0 as the text (7.07:1)
  • AA: or shift the background to #ababab (4.54:1)
  • AAA: or shift the background to #d4d4d4 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #181ec3 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

#181ec3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #181ec3
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 #181ec3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/181ec3-9f9cc4-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