Color
#187db4
#187db4rgb(24, 125, 180)hsl(201, 76%, 40%)oklch(0.562 0.12 239.6)Colors that go with #187db4
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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #187db4: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #187db4: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #187db4 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #187db4 in 10 real palettes, including Wired's brand system and Lemon Squeezy's brand system, as the accent.
Blue #0000ff
shipped10 real palettes, including Activision's brand system and Readymag's brand system put Blue beside #187db4, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #187db4: 8 real palettes, including Hershey's's brand system and Glacier, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #187db4: 5 real palettes, including Deep Water and Astro's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #187db4: 6 real palettes, including Venmo's brand system and Apple's brand system, as the lead colour.
Real palettes that use #187db4
Tints & shades
Harmonies
Contrast
| #187db4 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.53:1 | pass | pass | fail |
|
Aaon black | 4.63:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #187db4 as the background.
Brands using this color
Fonts for this mood
#187db4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #187db4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/187db4-9cb1c4-df4e62-1f222d-e9f1f0?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md