Color

#218ab0

#218ab0
hex#218ab0
rgbrgb(33, 138, 176)
hslhsl(196, 68%, 41%)
oklchoklch(0.594 0.107 228)
Closest name: steelblue (#4682b4)Relative luminance 0.2163

Colors that go with #218ab0

Charcoal, Crimson and Amber 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 →

#b04721

#21b08e · #2143b0

#b0218a · #8ab021

Split-complementary

Open in tool →

#b02143 · #b08e21

#8e21b0 · #b04721 · #43b021

Contrast

#218ab0 as textRatioAAAA largeAAAFix
Aaon white
3.94:1failpassfail
  • AA: use #1e7c9f as the text (4.73:1)
  • AAA: use #175e78 as the text (7.22:1)
  • AA: or shift the background to #171717 (4.55:1)
Aaon black
5.33:1passpassfail
  • AAA: use #27a1ce as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #218ab0 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#218ab0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #218ab0
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 #218ab0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/218ab0-9cb5c4-df4e6e-1f232d-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