Color
#2b6178
#2b6178rgb(43, 97, 120)hsl(198, 47%, 32%)oklch(0.466 0.068 228.7)Colors that go with #2b6178
Royal Blue, Sienna 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.
Royal Blue #4169e1
analogousshippedRoyal Blue is #2b6178's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #2b6178 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 #2b6178 in 4 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour.
Blue #0000ff
shipped8 real palettes, including Activision's brand system and Tesco's brand system put Blue beside #2b6178, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #2b6178: 4 real palettes, including Open House and Alpine, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #2b6178: 5 real palettes, including Fintech Trust and Unilever's brand system, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #2b6178: 4 real palettes, including Desert Road and Dusk, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #2b6178: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #2b6178
Tints & shades
Harmonies
Contrast
| #2b6178 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.81:1 | pass | pass | fail |
|
Aaon black | 3.08:1 | fail | 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 #2b6178 as the background.
Brands using this color
Fonts for this mood
#2b6178 reads as cool, modern. 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 #2b6178 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/2b6178-9cb3c4-df4e69-1f232d-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