Color

#1978b8

#1978b8
hex#1978b8
rgbrgb(25, 120, 184)
hslhsl(204, 76%, 41%)
oklchoklch(0.553 0.129 244.8)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.171

Colors that go with #1978b8

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 →

#b85919

#19b8a8 · #1929b8

#b81978 · #78b819

Split-complementary

Open in tool →

#b81929 · #b8a819

#a819b8 · #b85919 · #29b819

Contrast

#1978b8 as textRatioAAAA largeAAAFix
Aaon white
4.75:1passpassfail
  • AAA: use #135b8b as the text (7.25:1)
Aaon black
4.42:1failpassfail
  • AA: use #1a7bbc as the text (4.6:1)
  • AAA: use #359ee3 as the text (7.15:1)
  • AA: or shift the background to #fafafa (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 #1978b8 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1978b8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1978b8
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 #1978b8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1978b8-9cafc4-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