Color
#304a64
#304a64rgb(48, 74, 100)hsl(210, 35%, 29%)oklch(0.4 0.054 249.3)Colors that go with #304a64
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 #304a64'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 Jeep's brand system put Blue beside #304a64, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #304a64: 6 real palettes, including Paper & Pine and Dusk, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #304a64: 4 real palettes, including Desert Road and Dusk, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #304a64 in 9 real palettes, including Codecademy's brand system and Frost & Ember, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #304a64: 14 real palettes, including Hinge's brand system and Jack Daniel's's brand system, as the accent.
Emerald Green #50c878
shippedEmerald Green is paired with #304a64 in 5 real palettes, including Docker's brand system and Neon's brand system, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #304a64: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #304a64
Tints & shades
Harmonies
Contrast
| #304a64 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.17:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.29:1 | 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 #304a64 as the background.
Brands using this color
Fonts for this mood
#304a64 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 #304a64 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/304a64-9cabc4-df514e-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