Color
#00515b
#00515brgb(0, 81, 91)hsl(187, 100%, 18%)oklch(0.398 0.069 209.1)Colors that go with #00515b
Crimson, Steel Blue and Teal 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.
Crimson #dc143c
complementaryshippedCrimson sits directly opposite #00515b on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Steel Blue #4682b4
analogousshippedSteel Blue is #00515b'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 #00515b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped5 real palettes, including Alaska Airlines's brand system and Instacart's brand system put Blue beside #00515b, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #00515b: 4 real palettes, including Paper & Pine and Open House, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #00515b: 8 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 #00515b in 4 real palettes, including Neon's brand system and Chime's brand system, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #00515b: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #00515b
Tints & shades
Harmonies
Contrast
| #00515b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 9.02:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.33:1 | 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 #00515b as the background.
Brands using this color
Fonts for this mood
#00515b reads as cool, vivid, dark. 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 #00515b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/00515b-a2b8be-df4e83-1f262d-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