Color

#21baed

#21baed
hex#21baed
rgbrgb(33, 186, 237)
hslhsl(195, 85%, 53%)
oklchoklch(0.738 0.137 227.5)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.4156

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ed5421

#21edba · #2154ed

#ed21ba · #baed21

Split-complementary

Open in tool →

#ed2154 · #edba21

#ba21ed · #ed5421 · #54ed21

Contrast

#21baed as textRatioAAAA largeAAAFix
Aaon white
2.26:1failfailfail
  • AA: use #0d7fa5 as the text (4.57:1)
  • AAA: use #0a5e7b as the text (7.24:1)
  • AA: or shift the background to #404040 (4.6:1)
  • AAA: or shift the background to #212121 (7.14:1)
Aaon black
9.31:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #21baed 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

#21baed reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #21baed
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 #21baed and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/21baed-9cb5c4-df4e70-1f242d-e9f1ef?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