Color

#1e39cc

#1e39cc
hex#1e39cc
rgbrgb(30, 57, 204)
hslhsl(231, 74%, 46%)
oklchoklch(0.441 0.225 266.8)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0756

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ccb21e

#1e8fcc · #5b1ecc

#cc1e39 · #39cc1e

Split-complementary

Open in tool →

#cc5b1e · #8fcc1e

#cc1e8f · #ccb21e · #1ecc5b

Contrast

#1e39cc as textRatioAAAA largeAAAFix
Aaon white
8.36:1passpasspassPasses AAA — no fix needed.
Aaon black
2.51:1failfailfail
  • AA: use #566ce6 as the text (4.68:1)
  • AAA: use #7e8fec as the text (7.03:1)
  • AA: or shift the background to #bfbfbf (4.55:1)
  • AAA: or shift the background to #ebebeb (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1e39cc as the background.

Brands using this color

Fonts for this mood

#1e39cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1e39cc
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 #1e39cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1e39cc-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