Color
#18547b
#18547brgb(24, 84, 123)hsl(204, 67%, 29%)oklch(0.428 0.088 242.1)Colors that go with #18547b
Royal Blue, Blue and Cadet 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.
Royal Blue #4169e1
analogousshippedRoyal Blue is #18547b'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 #18547b, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #18547b: 4 real palettes, including Open House and Dusk, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #18547b: 4 real palettes, including Blizzard's brand system and Blue Mono, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #18547b in 14 real palettes, including Codecademy's brand system and Walgreens's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #18547b: 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 #18547b: 4 real palettes, including Fireside and Wendy's's brand system, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #18547b: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #18547b
Tints & shades
Harmonies
Contrast
| #18547b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.1:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.59:1 | 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 #18547b 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
#18547b 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 #18547b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18547b-9cafc4-df4e5a-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