Color

#2137ca

#2137ca
hex#2137ca
rgbrgb(33, 55, 202)
hslhsl(232, 72%, 46%)
oklchoklch(0.437 0.224 267.6)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0732

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cab321

#218cca · #5f21ca

#ca2137 · #37ca21

Split-complementary

Open in tool →

#ca5f21 · #8cca21

#ca218c · #cab321 · #21ca5f

Contrast

#2137ca as textRatioAAAA largeAAAFix
Aaon white
8.52:1passpasspassPasses AAA — no fix needed.
Aaon black
2.46:1failfailfail
  • AA: use #586be4 as the text (4.64:1)
  • AAA: use #8492eb as the text (7.29:1)
  • AA: or shift the background to #bdbdbd (4.54:1)
  • AAA: or shift the background to #ebebeb (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2137ca as the background.

Brands using this color

Fonts for this mood

#2137ca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2137ca
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 #2137ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2137ca-9c9dc4-df864e-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