# #135dfb

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

## Values

- Hex: `#135dfb`
- RGB: rgb(19, 93, 251)
- HSL: hsl(221, 97%, 53%)
- OKLCH: oklch(0.545 0.245 262.7)
- Relative luminance: 0.1493
- Nearest named color: Blue Ribbon (#0066ff, Δ 2.014) — https://brandsweets.com/colors/blue-ribbon
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/135dfb

## Tints & shades

- Tints (toward white): #2c6efc, #407cfc, #598dfc, #6d9bfd, #86acfd, #9bbafd, #b4cbfe, #c8d9fe, #e1eaff, #f5f8ff
- Shades (toward black): #044ff1, #0347d8, #033ebf, #0336a6, #023092, #022779, #011f5f, #011746, #010f2d, #000714

## Harmonies

- Complementary: #fbb213
- Analogous: #13d1fb, #3e13fb
- Triadic: #fb135d, #5dfb13
- Split-complementary: #fb3e13, #d1fb13
- Tetradic: #fb13d1, #fbb213, #13fb3e

## Colors that go with #135dfb

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 #135dfb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Zoom (https://brandsweets.com/colors/brands/zoom-us), Docker (https://brandsweets.com/colors/brands/docker-com), Campus (https://brandsweets.com/palettes/friendly#campus), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #135dfb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-com), WWE (https://brandsweets.com/colors/brands/wwe-com), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Amber** #ffbf00 [pool] — Amber is paired with #135dfb 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), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 9 real palettes, including Dropbox's brand system and Headspace's brand system put Blue beside #135dfb, as the accent. Seen in: Dropbox (https://brandsweets.com/colors/brands/dropbox-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), Signal (https://brandsweets.com/colors/brands/signal-org), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #135dfb: 10 real palettes, including Nivea's brand system and Nokia's brand system, as the lead colour. Seen in: Nivea (https://brandsweets.com/colors/brands/nivea-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Behance (https://brandsweets.com/colors/brands/behance-net), NHL (https://brandsweets.com/colors/brands/nhl-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #135dfb: 7 real palettes, including Roblox's brand system and Webflow's brand system, as the supporting colour. Seen in: Roblox (https://brandsweets.com/colors/brands/roblox-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), NBA (https://brandsweets.com/colors/brands/nba-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #135dfb: 6 real palettes, including Elastic's brand system and Calm's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Calm (https://brandsweets.com/colors/brands/calm-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #135dfb: 8 real palettes, including OnePlus's brand system and ASUS's brand system, as the supporting colour. Seen in: OnePlus (https://brandsweets.com/colors/brands/oneplus-com), ASUS (https://brandsweets.com/colors/brands/asus-com), HashiCorp (https://brandsweets.com/colors/brands/hashicorp-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/dodgerblue

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

- On white (#ffffff): 5.27:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0348dd (7.06:1)
- On black (#000000): 3.99:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #276afc (4.55:1); AA: background → #f0f0f0 (4.62:1); AAA: text → #6394fd (7.18:1)

## Brands using this color

- **Zoom** — primary #0b5cff (Δ 0.677) — https://brandsweets.com/colors/brands/zoom-us
- **Zoom** — secondary #0b5cff (Δ 0.677) — https://brandsweets.com/colors/brands/zoom-us
- **Spectrum** — accent #005eff (Δ 0.74) — https://brandsweets.com/colors/brands/spectrum-com
- **Toyota** — accent #145fff (Δ 0.774) — https://brandsweets.com/colors/brands/toyota-com
- **Cisco** — secondary #0a60ff (Δ 0.88) — https://brandsweets.com/colors/brands/cisco-com
- **Nivea** — secondary #0f60ff (Δ 0.889) — https://brandsweets.com/colors/brands/nivea-com
- **Bose** — secondary #005bff (Δ 0.913) — https://brandsweets.com/colors/brands/bose-com
- **Dropbox** — secondary #0061fe (Δ 0.973) — https://brandsweets.com/colors/brands/dropbox-com
- **Dropbox** — primary #0061ff (Δ 1.053) — https://brandsweets.com/colors/brands/dropbox-com
- **Nokia** — accent #005aff (Δ 1.053) — https://brandsweets.com/colors/brands/nokia-com
- **IBM** — accent #0062fe (Δ 1.153) — https://brandsweets.com/colors/brands/ibm-com
- **IBM** — secondary #0f62fe (Δ 1.175) — https://brandsweets.com/colors/brands/ibm-com
- **Docker** — secondary #2560ff (Δ 1.401) — https://brandsweets.com/colors/brands/docker-com
- **OnePlus** — accent #2660f5 (Δ 1.514) — https://brandsweets.com/colors/brands/oneplus-com
- **Chase** — secondary #0060f0 (Δ 1.82) — https://brandsweets.com/colors/brands/chase-com
- **Grafana Labs** — primary #1b55f5 (Δ 1.912) — https://brandsweets.com/colors/brands/grafana-com
- **Grafana Labs** — accent #1b55f5 (Δ 1.912) — https://brandsweets.com/colors/brands/grafana-com
- **Framer** — primary #0055ff (Δ 1.935) — https://brandsweets.com/colors/brands/framer
- **Roblox** — primary #345cfc (Δ 1.937) — https://brandsweets.com/colors/brands/roblox-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/135dfb-9ca4c4-df6b4e-211f2d-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: "#135dfb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.