Color

#121bce

#121bce
hex#121bce
rgbrgb(18, 27, 206)
hslhsl(237, 84%, 44%)
oklchoklch(0.404 0.254 266.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0537

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cec512

#127ace · #6712ce

#ce121b · #1bce12

Split-complementary

Open in tool →

#ce6712 · #7ace12

#ce127a · #cec512 · #12ce67

Contrast

#121bce as textRatioAAAA largeAAAFix
Aaon white
10.13:1passpasspassPasses AAA — no fix needed.
Aaon black
2.07:1failfailfail
  • AA: use #5f67f1 as the text (4.7:1)
  • AAA: use #8a8ff5 as the text (7.33:1)
  • AA: or shift the background to #adadad (4.51:1)
  • AAA: or shift the background to #d9d9d9 (7.17:1)

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

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

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

tool url/palettes/new/121bce-9f9cc4-df924e-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