Color
#304b40
#304b40rgb(48, 75, 64)hsl(156, 22%, 24%)oklch(0.387 0.038 167)Colors that go with #304b40
Sea Green, Teal 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.
Sea Green #2e8b57
analogousshippedSea Green is #304b40's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Teal #008080
analogousshippedTeal is #304b40's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped9 real palettes, including Jeep's brand system and Dunkin''s brand system put Blue beside #304b40, as the accent.
Blush Pink #e8b4b8
shipped4 real palettes, including Nursery and Garden Wedding put Blush Pink beside #304b40, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #304b40: 4 real palettes, including Notion's brand system and Desert Road.
Crimson #dc143c
shippedCrimson is paired with #304b40 in 7 real palettes, including Codecademy's brand system and Dunkin''s brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #304b40: 4 real palettes, including Lamborghini's brand system and Vimeo's brand system, as the supporting colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #304b40: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #304b40
Tints & shades
Harmonies
Contrast
| #304b40 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.52:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.21:1 | 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 #304b40 as the background.
Brands using this color
Fonts for this mood
#304b40 reads as muted, 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 #304b40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/304b40-a2beb6-d459c6-1f2d2d-e9f1ea?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