Color

#1598cb

#1598cb
hex#1598cb
rgbrgb(21, 152, 203)
hslhsl(197, 81%, 44%)
oklchoklch(0.639 0.126 232.1)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2693

Colors that go with #1598cb

Charcoal, Amber and Cobalt 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 →

#cb4915

#15cba4 · #153dcb

#cb1598 · #98cb15

Split-complementary

Open in tool →

#cb153d · #cba415

#a415cb · #cb4915 · #3dcb15

Contrast

#1598cb as textRatioAAAA largeAAAFix
Aaon white
3.29:1failpassfail
  • AA: use #127fab as the text (4.52:1)
  • AAA: use #0d5d7d as the text (7.29:1)
  • AA: or shift the background to #262626 (4.6:1)
Aaon black
6.39:1passpassfail
  • AAA: use #17a2d9 as the text (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1598cb as the background.

Brands using this color

Fonts for this mood

#1598cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1598cb
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 #1598cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1598cb-9cb4c4-df4e6b-1f232d-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