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
#2d737b
#2d737b
hex
#2d737brgb
rgb(45, 115, 123)hsl
hsl(186, 46%, 33%)oklch
oklch(0.515 0.07 205.6)Closest name: Calypso (#3d7188)Relative luminance 0.1425
Colors that go with #2d737b
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 #2d737b: softer than #000 and cool enough to feel like part of the same palette.
Rust #b7410e
complementaryshippedRust sits directly opposite #2d737b 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 #2d737b in 4 real palettes, including Lemon Squeezy's brand system and Beach Hut, as the lead colour.
Blue #0000ff
shipped4 real palettes, including Warp's brand system and Activision's brand system put Blue beside #2d737b, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #2d737b: 6 real palettes, including Fintech Trust and Ink & Paper, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #2d737b: 5 real palettes, including Riverbed and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with #2d737b in 11 real palettes, including Gemstone and Redfin's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #2d737b: 4 real palettes, including Warp's brand system and Deep Water, as the lead colour.
Real palettes that use #2d737b
Tints & shades
Harmonies
Contrast
| #2d737b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.45:1 | pass | pass | fail |
|
Aaon black | 3.85:1 | 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 #2d737b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#2d737b reads as cool, modern. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #2d737b
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 #2d737b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/2d737b-a2b8be-df4e86-1f262d-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