Color

#33758a

#33758a
hex#33758a
rgbrgb(51, 117, 138)
hslhsl(194, 46%, 37%)
oklchoklch(0.529 0.074 221.8)
Closest name: Calypso (#3d7188)Relative luminance 0.1526

Colors that go with #33758a

Charcoal, Crimson and Sienna 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 #33758a

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8a4733

#338a73 · #334a8a

#8a3375 · #758a33

Split-complementary

Open in tool →

#8a334a · #8a7333

#73338a · #8a4733 · #4a8a33

Contrast

#33758a as textRatioAAAA largeAAAFix
Aaon white
5.18:1passpassfail
  • AAA: use #295f70 as the text (7.08:1)
Aaon black
4.05:1failpassfail
  • AA: use #377f95 as the text (4.63:1)
  • AAA: use #49a1bc as the text (7.11:1)
  • AA: or shift the background to #f0f0f0 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #33758a 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

#33758a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #33758a
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 #33758a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/33758a-9cb6c4-df4e72-1f242d-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