Color
#15566f
#15566frgb(21, 86, 111)hsl(197, 68%, 26%)oklch(0.426 0.075 228.8)Colors that go with #15566f
Crimson, Royal Blue 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.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #15566f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Royal Blue #4169e1
analogousshippedRoyal Blue is #15566f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped6 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #15566f, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #15566f: 4 real palettes, including Open House and Dusk, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #15566f: 14 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #15566f in 5 real palettes, including Fireside and Disney's brand system, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #15566f in 4 real palettes, including Mint Modern and Console Light, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #15566f: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #15566f
Tints & shades
Harmonies
Contrast
| #15566f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.1:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.59:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #15566f as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#15566f reads as cool, vivid, dark. 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 #15566f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/15566f-9cb4c4-df4e6b-1f232d-e9f1ef?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