# #15499d

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#15499d`
- RGB: rgb(21, 73, 157)
- HSL: hsl(217, 76%, 35%)
- OKLCH: oklch(0.424 0.147 260)
- Relative luminance: 0.0736
- Nearest named color: Cascade Twilight (#234893, Δ 1.839) — https://brandsweets.com/colors/cascade-twilight
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/15499d

## Tints & shades

- Tints (toward white): #1956b8, #1d65d7, #3175e3, #4b87e7, #6b9ceb, #86aeee, #a1c0f2, #bcd2f6, #dbe7fa, #f6f9fe
- Shades (toward black): #144390, #123d82, #103775, #0e3067, #0c2a5a, #0a2248, #081b3a, #06152d, #040f1f, #020812

## Harmonies

- Complementary: #9d6915
- Analogous: #158d9d, #25159d
- Triadic: #9d1549, #499d15
- Split-complementary: #9d2515, #8d9d15
- Tetradic: #9d158d, #9d6915, #159d25

## Colors that go with #15499d

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #15499d: softer than #000 and cool enough to feel like part of the same palette. Seen in: Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Amazon (https://brandsweets.com/colors/brands/amazon-com), UEFA (https://brandsweets.com/colors/brands/uefa-com), Harbour (https://brandsweets.com/palettes/cool#harbour). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #15499d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Costco (https://brandsweets.com/colors/brands/costco-com), Chase (https://brandsweets.com/colors/brands/chase-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com). — https://brandsweets.com/colors/crimson
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #15499d's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com). — https://brandsweets.com/colors/steelblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #15499d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #15499d in 5 real palettes, including Warner Bros.'s brand system and McDonald's's brand system, as the accent. Seen in: Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 7 real palettes, including CVS's brand system and Tesco's brand system put Blue beside #15499d, as the supporting colour. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #15499d: 4 real palettes, including Blue Mono and Gopro's brand system, as the supporting colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Gopro (https://brandsweets.com/colors/brands/gopro-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #15499d: 4 real palettes, including Coursera's brand system and Apple's brand system, as the supporting colour. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), Apple (https://brandsweets.com/colors/brands/apple-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com). — https://brandsweets.com/colors/dodgerblue

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 8.5:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.47:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2c72e2 (4.61:1); AA: background → #bdbdbd (4.52:1); AAA: text → #6296ea (7.07:1); AAA: background → #ebebeb (7.13:1)

## Brands using this color

- **Carrefour** — accent #004e9f (Δ 1.405) — https://brandsweets.com/colors/brands/carrefour-com
- **CVS** — accent #004d99 (Δ 1.454) — https://brandsweets.com/colors/brands/cvs-com
- **Unilever** — secondary #004d99 (Δ 1.454) — https://brandsweets.com/colors/brands/unilever-com
- **Walgreens** — accent #284b9b (Δ 1.7) — https://brandsweets.com/colors/brands/walgreens-com
- **Reebok** — accent #244496 (Δ 1.822) — https://brandsweets.com/colors/brands/reebok-com

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/15499d-9ca7c4-df624e-201f2d-e9f0f1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#15499d" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.