Color
#284a71
#284a71rgb(40, 74, 113)hsl(212, 48%, 30%)oklch(0.403 0.077 253.1)Colors that go with #284a71
Teal, Blue and Cadet 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.
Teal #008080
analogousshippedTeal is #284a71's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped7 real palettes, including Alaska Airlines's brand system and CVS's brand system put Blue beside #284a71, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #284a71: 4 real palettes, including Dusk and Open House, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #284a71 in 9 real palettes, including Codecademy's brand system and Walgreens's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #284a71: 15 real palettes, including Hinge's brand system and Jack Daniel's's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #284a71 in 5 real palettes, including Disney's brand system and Sapphire & Gold, as the accent.
Midnight Blue #191970
shipped14 real palettes, including Microsoft's brand system and First Snow put Midnight Blue beside #284a71, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #284a71: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #284a71
Tints & shades
Harmonies
Contrast
| #284a71 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.1:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.31:1 | 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 #284a71 as the background.
Brands using this color
Fonts for this mood
#284a71 reads as cool, dark, luxury. 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 #284a71 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/284a71-9caac4-df564e-1f202d-e9f1f1?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