Mid-Century
Open in tool →Tangerine, teal and mustard on cream — the 1960s lounge trio, one of the few retro palettes with real hue contrast.
Color
#306d78
#306d78
hex
#306d78rgb
rgb(48, 109, 120)hsl
hsl(189, 43%, 33%)oklch
oklch(0.499 0.065 211)Closest name: Deep Pool Teal (#366d68)Relative luminance 0.1292
Colors that go with #306d78
Charcoal, Rust 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #306d78: softer than #000 and cool enough to feel like part of the same palette.
Rust #b7410e
complementaryshippedRust sits directly opposite #306d78 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 #306d78 in 4 real palettes, including Lemon Squeezy's brand system and McDonald's's brand system, as the lead colour.
Blue #0000ff
shipped4 real palettes, including Warp's brand system and Activision's brand system put Blue beside #306d78, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #306d78: 6 real palettes, including Fintech Trust and Ink & Paper, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #306d78: 5 real palettes, including Desert Road and Dusk, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #306d78 in 12 real palettes, including Gemstone and Redfin's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #306d78: 16 real palettes, including The New York Times's brand system and Campus, as the supporting colour.
Real palettes that use #306d78
Tints & shades
Harmonies
Contrast
| #306d78 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.86:1 | pass | pass | fail |
|
Aaon black | 3.58:1 | 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 #306d78 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#306d78 reads as cool, modern. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #306d78
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #306d78 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/306d78-a2b7be-df4e7e-1f252d-e9f1ee?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