Color

#45b2e8

#45b2e8
hex#45b2e8
rgbrgb(69, 178, 232)
hslhsl(200, 78%, 59%)
oklchoklch(0.724 0.125 234)
Closest name: Cerulean (#55aaee)Relative luminance 0.3893

Colors that go with #45b2e8

Charcoal, Dark Orange 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 →

#e87b45

#45e8cd · #4560e8

#e845b2 · #b2e845

Split-complementary

Open in tool →

#e84560 · #e8cd45

#cd45e8 · #e87b45 · #60e845

Contrast

#45b2e8 as textRatioAAAA largeAAAFix
Aaon white
2.39:1failfailfail
  • AA: use #167db1 as the text (4.56:1)
  • AAA: use #105d84 as the text (7.19:1)
  • AA: or shift the background to #3d3d3d (4.54:1)
  • AAA: or shift the background to #1c1c1c (7.13:1)
Aaon black
8.79:1passpasspassPasses 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 #45b2e8 as the background.

Brands using this color

Fonts for this mood

#45b2e8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #45b2e8
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 #45b2e8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/45b2e8-9cb2c4-df4e64-1f232d-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