Color

#121eca

#121eca
hex#121eca
rgbrgb(18, 30, 202)
hslhsl(236, 84%, 43%)
oklchoklch(0.401 0.248 266.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0532

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cabd12

#127aca · #6112ca

#ca121e · #1eca12

Split-complementary

Open in tool →

#ca6112 · #7aca12

#ca127a · #cabd12 · #12ca61

Contrast

#121eca as textRatioAAAA largeAAAFix
Aaon white
10.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #5b65f1 as the text (4.58:1)
  • AAA: use #858cf4 as the text (7.05:1)
  • AA: or shift the background to #adadad (4.53:1)
  • AAA: or shift the background to #d9d9d9 (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #121eca 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

#121eca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #121eca
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 #121eca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/121eca-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