Color

#2135ca

#2135ca
hex#2135ca
rgbrgb(33, 53, 202)
hslhsl(233, 72%, 46%)
oklchoklch(0.434 0.226 267.7)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0713

Colors that go with #2135ca

Charcoal, Sea Green and Steel 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 →

#cab621

#2189ca · #6221ca

#ca2135 · #35ca21

Split-complementary

Open in tool →

#ca6221 · #89ca21

#ca2189 · #cab621 · #21ca62

Contrast

#2135ca as textRatioAAAA largeAAAFix
Aaon white
8.65:1passpasspassPasses AAA — no fix needed.
Aaon black
2.43:1failfailfail
  • AA: use #5869e4 as the text (4.56:1)
  • AAA: use #8490eb as the text (7.17:1)
  • AA: or shift the background to #bdbdbd (4.61:1)
  • AAA: or shift the background to #e8e8e8 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2135ca 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

#2135ca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2135ca
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 #2135ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2135ca-9c9cc4-df884e-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