Color
#0f557b
#0f557brgb(15, 85, 123)hsl(201, 78%, 27%)oklch(0.428 0.09 239.1)Colors that go with #0f557b
Crimson, Royal Blue 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.
Crimson #dc143c
split-complementshippedCrimson is a split-complement of #0f557b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Royal Blue #4169e1
analogousshippedRoyal Blue is #0f557b'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 CVS's brand system and Tesco's brand system put Blue beside #0f557b, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #0f557b: 4 real palettes, including Open House and Dusk, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #0f557b: 4 real palettes, including Blizzard's brand system and Blue Mono, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #0f557b: 16 real palettes, including Dutch Bros's brand system and HP's brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #0f557b: 4 real palettes, including Fireside and Wendy's's brand system, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #0f557b: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #0f557b
Tints & shades
Harmonies
Contrast
| #0f557b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.06:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.61:1 | 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 #0f557b as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#0f557b 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 #0f557b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/0f557b-9cb1c4-df4e62-1f222d-e9f1f0?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