Color

#2183c0

#2183c0
hex#2183c0
rgbrgb(33, 131, 192)
hslhsl(203, 71%, 44%)
oklchoklch(0.585 0.127 242.1)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.2036

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c05e21

#21c0ad · #2133c0

#c02183 · #83c021

Split-complementary

Open in tool →

#c02133 · #c0ad21

#ad21c0 · #c05e21 · #33c021

Contrast

#2183c0 as textRatioAAAA largeAAAFix
Aaon white
4.14:1failpassfail
  • AA: use #1e7ab3 as the text (4.68:1)
  • AAA: use #175c87 as the text (7.2:1)
  • AA: or shift the background to #121212 (4.52:1)
Aaon black
5.07:1passpassfail
  • AAA: use #369ddd as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2183c0 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

#2183c0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2183c0
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 #2183c0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2183c0-9cb0c4-df4e5d-1f222d-e9f1f0?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