Color

#2da8fb

#2da8fb
hex#2da8fb
rgbrgb(45, 168, 251)
hslhsl(204, 96%, 58%)
oklchoklch(0.705 0.159 244.2)
Closest name: Cerulean (#55aaee)Relative luminance 0.3553

Colors that go with #2da8fb

Charcoal, Amber and Blue 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 →

#fb7f2d

#2dfbe6 · #2d42fb

#fb2da8 · #a8fb2d

Split-complementary

Open in tool →

#fb2d42 · #fbe62d

#e62dfb · #fb7f2d · #42fb2d

Contrast

#2da8fb as textRatioAAAA largeAAAFix
Aaon white
2.59:1failfailfail
  • AA: use #047ac8 as the text (4.54:1)
  • AAA: use #035b96 as the text (7.14:1)
  • AA: or shift the background to #383838 (4.53:1)
  • AAA: or shift the background to #141414 (7.11:1)
Aaon black
8.11:1passpasspassPasses 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 #2da8fb as the background.

Brands using this color

Fonts for this mood

#2da8fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2da8fb
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 #2da8fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2da8fb-9cafc4-df4e5a-1f222d-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