# #1f45db

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

## Values

- Hex: `#1f45db`
- RGB: rgb(31, 69, 219)
- HSL: hsl(228, 75%, 49%)
- OKLCH: oklch(0.476 0.23 265.8)
- Relative luminance: 0.0966
- Nearest named color: C64 Blue (#003aff, Δ 5.834) — https://brandsweets.com/colors/c64-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1f45db

## Tints & shades

- Tints (toward white): #3255e2, #4867e5, #5e7ae8, #758ceb, #8b9fee, #9daef1, #b3c0f4, #c9d3f7, #e0e5fb, #f6f8fe
- Shades (toward black): #1d3fc9, #1938b3, #1732a1, #142b8a, #112678, #0e1f62, #0b1950, #08123a, #060d28, #030612

## Harmonies

- Complementary: #dbb51f
- Analogous: #1fa2db, #571fdb
- Triadic: #db1f45, #45db1f
- Split-complementary: #db571f, #a2db1f
- Tetradic: #db1fa2, #dbb51f, #1fdb57

## Colors that go with #1f45db

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 #1f45db: softer than #000 and cool enough to feel like part of the same palette. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-com), Zoom (https://brandsweets.com/colors/brands/zoom-us). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #1f45db — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Intel (https://brandsweets.com/colors/brands/intel-com), Coinbase (https://brandsweets.com/colors/brands/coinbase), Kia (https://brandsweets.com/colors/brands/kia-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #1f45db in 6 real palettes, including Walmart's brand system and NBA's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), NBA (https://brandsweets.com/colors/brands/nba-com), Binance (https://brandsweets.com/colors/brands/binance-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1f45db: 9 real palettes, including Qualcomm's brand system and Gopro's brand system, as the supporting colour. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Roblox (https://brandsweets.com/colors/brands/roblox-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #1f45db in 16 real palettes, including Behance's brand system and Coinbase's brand system, as the accent. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Coinbase (https://brandsweets.com/colors/brands/coinbase), Chase (https://brandsweets.com/colors/brands/chase-com), Toyota (https://brandsweets.com/colors/brands/toyota-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1f45db: 5 real palettes, including Warp's brand system and Kraken's brand system, as the lead colour. Seen in: Warp (https://brandsweets.com/colors/brands/warp-dev), Kraken (https://brandsweets.com/colors/brands/kraken-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1f45db: 11 real palettes, including Coursera's brand system and HashiCorp's brand system, as the supporting colour. Seen in: Coursera (https://brandsweets.com/colors/brands/coursera-org), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), OnePlus (https://brandsweets.com/colors/brands/oneplus-com), Apple (https://brandsweets.com/colors/brands/apple-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #1f45db: 5 real palettes, including MLB's brand system and 3M's brand system, as the supporting colour. Seen in: MLB (https://brandsweets.com/colors/brands/mlb-com), 3M (https://brandsweets.com/colors/brands/3m-com), Nissan (https://brandsweets.com/colors/brands/nissanusa-com), Bose (https://brandsweets.com/colors/brands/bose-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 7.16:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.93:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4c6be6 (4.55:1); AA: background → #cfcfcf (4.6:1); AAA: text → #7990ec (7.01:1); AAA: background → #ffffff (7.16:1)

## Brands using this color

- **Oreo** — primary #0047d9 (Δ 1.34) — https://brandsweets.com/colors/brands/oreo-com
- **Zillow** — primary #0443dc (Δ 1.429) — https://brandsweets.com/colors/brands/zillow-com
- **HP** — accent #024ad8 (Δ 1.444) — https://brandsweets.com/colors/brands/hp-com
- **Dairy Queen** — accent #0b4cdb (Δ 1.482) — https://brandsweets.com/colors/brands/dairyqueen-com
- **Zillow** — secondary #0444d4 (Δ 1.805) — https://brandsweets.com/colors/brands/zillow-com

## Curated palettes containing it

- **Campus** (friendly, cool, clean) — #1d4ed8, #64748b, #f59e0b, #ffffff, #1e293b — Institutional blue with a highlighter-amber accent — trustworthy for parents, lively enough for students. — tool: https://brandsweets.com/palettes/new/1d4ed8-64748b-f59e0b-ffffff-1e293b — collection: https://brandsweets.com/palettes/friendly
- **Peacock** (jewel-tones, vivid, cool, bold) — #0d9488, #1d4ed8, #a21caf, #ffffff, #0c1a2b — Teal, cobalt and magenta at full chroma on white — jewel tones in daylight; the trick is a near-black text with a blue cast. — tool: https://brandsweets.com/palettes/new/0d9488-1d4ed8-a21caf-ffffff-0c1a2b — collection: https://brandsweets.com/palettes/jewel-tones

## 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/1f45db-9c9fc4-df7c4e-231f2d-e9eff1?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: "#1f45db" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.