Color

#338ea3

#338ea3
hex#338ea3
rgbrgb(51, 142, 163)
hslhsl(191, 52%, 42%)
oklchoklch(0.602 0.09 216.1)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2269

Colors that go with #338ea3

Charcoal, Copper and Crimson 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.

Real palettes that use #338ea3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a34833

#33a380 · #3357a3

#a3338e · #8ea333

Split-complementary

Open in tool →

#a33357 · #a38033

#8033a3 · #a34833 · #57a333

Contrast

#338ea3 as textRatioAAAA largeAAAFix
Aaon white
3.79:1failpassfail
  • AA: use #2d7d8f as the text (4.73:1)
  • AAA: use #225f6d as the text (7.18:1)
  • AA: or shift the background to #1a1a1a (4.59:1)
Aaon black
5.54:1passpassfail
  • AAA: use #3ba3ba as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #338ea3 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

#338ea3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #338ea3
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 #338ea3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/338ea3-a2b6be-df4e7a-1f252d-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