# #1d5bcd

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

## Values

- Hex: `#1d5bcd`
- RGB: rgb(29, 91, 205)
- HSL: hsl(219, 75%, 46%)
- OKLCH: oklch(0.504 0.188 261.4)
- Relative luminance: 0.1215
- Nearest named color: Denim (#1560bd, Δ 2.913) — https://brandsweets.com/colors/denim
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1d5bcd

## Tints & shades

- Tints (toward white): #2466e0, #3b76e3, #5588e7, #6c98ea, #82a8ed, #98b7f0, #afc7f4, #c9daf7, #e0e9fb, #f6f9fe
- Shades (toward black): #1b53bb, #184baa, #154193, #123981, #103170, #0d2a5e, #0b224c, #081836, #051024, #030812

## Harmonies

- Complementary: #cd901d
- Analogous: #1db3cd, #381dcd
- Triadic: #cd1d5b, #5bcd1d
- Split-complementary: #cd381d, #b3cd1d
- Tetradic: #cd1db3, #cd901d, #1dcd38

## Colors that go with #1d5bcd

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 #1d5bcd: softer than #000 and cool enough to feel like part of the same palette. Seen in: UEFA (https://brandsweets.com/colors/brands/uefa-com), Campus (https://brandsweets.com/palettes/friendly#campus), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1d5bcd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Chase (https://brandsweets.com/colors/brands/chase-com), Netflix (https://brandsweets.com/colors/brands/netflix), Ulta Beauty (https://brandsweets.com/colors/brands/ulta-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #1d5bcd in 8 real palettes, including NBA's brand system and Wikipedia's brand system, as the lead colour. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 15 real palettes, including Pixar's brand system and Headspace's brand system put Blue beside #1d5bcd, as the accent. Seen in: Pixar (https://brandsweets.com/colors/brands/pixar-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Zillow (https://brandsweets.com/colors/brands/zillow-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1d5bcd: 8 real palettes, including Gopro's brand system and NBA's brand system, as the supporting colour. Seen in: Gopro (https://brandsweets.com/colors/brands/gopro-com), NBA (https://brandsweets.com/colors/brands/nba-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1d5bcd: 8 real palettes, including Venmo's brand system and Astro's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), 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 #1d5bcd: 7 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), Apple (https://brandsweets.com/colors/brands/apple-com), ASUS (https://brandsweets.com/colors/brands/asus-com). — https://brandsweets.com/colors/dodgerblue
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #1d5bcd: 8 real palettes, including Nissan's brand system and Campbell's's brand system, as the supporting colour. Seen in: Nissan (https://brandsweets.com/colors/brands/nissanusa-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com), MLB (https://brandsweets.com/colors/brands/mlb-com), Bose (https://brandsweets.com/colors/brands/bose-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 6.12:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1a51b7 (7.23:1)
- On black (#000000): 3.43:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #326fe2 (4.51:1); AA: background → #dedede (4.55:1); AAA: text → #6795e9 (7.05:1)

## Brands using this color

- **Nissan** — accent #005fcc (Δ 1.247) — https://brandsweets.com/colors/brands/nissanusa-com
- **ElevenLabs** — accent #0a59d2 (Δ 1.251) — https://brandsweets.com/colors/brands/elevenlabs-io
- **Strava** — accent #0060d0 (Δ 1.413) — https://brandsweets.com/colors/brands/strava-com
- **YouTube** — accent #065fd4 (Δ 1.49) — https://brandsweets.com/colors/brands/youtube-com
- **Philips** — secondary #0b5ed7 (Δ 1.719) — https://brandsweets.com/colors/brands/philips-com
- **Box** — primary #0061d5 (Δ 1.908) — https://brandsweets.com/colors/brands/box-com
- **Box** — secondary #0061d5 (Δ 1.908) — https://brandsweets.com/colors/brands/box-com
- **Coursera** — accent #0056d2 (Δ 1.948) — https://brandsweets.com/colors/brands/coursera-org

## 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/1d5bcd-9ca5c4-df664e-211f2d-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: "#1d5bcd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.