# #23679f

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

## Values

- Hex: `#23679f`
- RGB: rgb(35, 103, 159)
- HSL: hsl(207, 64%, 38%)
- OKLCH: oklch(0.499 0.112 247.5)
- Relative luminance: 0.1256
- Nearest named color: Chill of the Night (#256d8d, Δ 3.805) — https://brandsweets.com/colors/chill-of-the-night
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/23679f

## Tints & shades

- Tints (toward white): #2877b8, #2e88d1, #4796d7, #60a4dc, #79b3e2, #92c1e7, #abcfed, #c4def2, #deecf8, #f7fafd
- Shades (toward black): #205f92, #1c5482, #1a4c75, #164164, #133958, #11314b, #0d263b, #0a1e2e, #06131d, #040b11

## Harmonies

- Complementary: #9f5b23
- Analogous: #239f99, #23299f
- Triadic: #9f2367, #679f23
- Split-complementary: #9f2329, #9f9923
- Tetradic: #99239f, #9f5b23, #299f23

## Colors that go with #23679f

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 #23679f: softer than #000 and cool enough to feel like part of the same palette. Seen in: Amazon (https://brandsweets.com/colors/brands/amazon-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Harbour (https://brandsweets.com/palettes/cool#harbour), Hinge (https://brandsweets.com/colors/brands/hinge-co). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #23679f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Costco (https://brandsweets.com/colors/brands/costco-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #23679f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Motorola (https://brandsweets.com/colors/brands/motorola-com), Xbox (https://brandsweets.com/colors/brands/xbox-com), Guinness (https://brandsweets.com/colors/brands/guinness-com), Chase (https://brandsweets.com/colors/brands/chase-com). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #23679f 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 #23679f in 8 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #23679f, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #23679f: 4 real palettes, including Coca-Cola's brand system and Gopro's brand system, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), NBA (https://brandsweets.com/colors/brands/nba-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #23679f: 4 real palettes, including Venmo's brand system and Deep Water, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Astro (https://brandsweets.com/colors/brands/astro-build), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 5.98:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1f5c8e (7.05:1)
- On black (#000000): 3.51:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #297abc (4.6:1); AA: background → #e0e0e0 (4.53:1); AAA: text → #4f9bd8 (7.01:1)

## Brands using this color

- **Slack** — primary #1264a3 (Δ 1.531) — https://brandsweets.com/colors/brands/slack-com
- **Slack** — accent #1264a3 (Δ 1.531) — https://brandsweets.com/colors/brands/slack-com
- **Amazon** — accent #2162a1 (Δ 1.592) — https://brandsweets.com/colors/brands/amazon-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/23679f-9cadc4-df4e53-1f212d-e9f1f1?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: "#23679f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.