# #257598

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

## Values

- Hex: `#257598`
- RGB: rgb(37, 117, 152)
- HSL: hsl(198, 61%, 37%)
- OKLCH: oklch(0.531 0.093 231.4)
- Relative luminance: 0.1538
- Nearest named color: Bleu Ciel (#007ba1, Δ 2.049) — https://brandsweets.com/colors/bleu-ciel
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/257598

## Tints & shades

- Tints (toward white): #2b88b1, #319bc9, #46a8d2, #5fb4d8, #7cc1df, #94cde5, #add8eb, #c6e4f1, #def0f7, #f7fbfd
- Shades (toward black): #226c8c, #1e5f7b, #1b566f, #184c63, #154356, #113646, #0e2c39, #0b232d, #07161d, #040d10

## Harmonies

- Complementary: #984725
- Analogous: #259881, #253c98
- Triadic: #982575, #759825
- Split-complementary: #98253c, #988125
- Tetradic: #812598, #984725, #3c9825

## Colors that go with #257598

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 #257598: softer than #000 and cool enough to feel like part of the same palette. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Gusto (https://brandsweets.com/colors/brands/gusto-com), Amazon (https://brandsweets.com/colors/brands/amazon-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: split] — Crimson is a split-complement of #257598: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Wendy's (https://brandsweets.com/colors/brands/wendys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Redfin (https://brandsweets.com/colors/brands/redfin-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/crimson
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #257598's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Slate Workspace (https://brandsweets.com/palettes/minimal#slate-workspace), Stripe (https://brandsweets.com/colors/brands/stripe), Xbox (https://brandsweets.com/colors/brands/xbox-com), Motorola (https://brandsweets.com/colors/brands/motorola-com). — https://brandsweets.com/colors/royalblue
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #257598 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 #257598 in 8 real palettes, including Lemon Squeezy's brand system and McDonald's's brand system, as the lead colour. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wired (https://brandsweets.com/colors/brands/wired-com). — https://brandsweets.com/colors/amber
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #257598: 7 real palettes, including Fintech Trust and Glacier, as the lead colour. 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), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #257598: 4 real palettes, including Dusk and Riverbed, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #257598: 4 real palettes, including Deep Water and Venmo's brand system, as the lead colour. Seen in: Deep Water (https://brandsweets.com/palettes/dark#deep-water), Venmo (https://brandsweets.com/colors/brands/venmo-com), 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): 5.15:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1e5f7b (7.05:1)
- On black (#000000): 4.08:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #287fa4 (4.66:1); AA: background → #f0f0f0 (4.52:1); AAA: text → #36a1ce (7.15:1)

## Brands using this color

- **Wendy's** — accent #0077a3 (Δ 1.905) — https://brandsweets.com/colors/brands/wendys-com

## Curated palettes containing it

- **Clinic** (clean, cool, light) — #0e7490, #64748b, #f97316, #f8fafc, #0f172a — Teal reads clinical without the coldness of pure blue; the coral accent adds warmth for reassurance moments. — tool: https://brandsweets.com/palettes/new/0e7490-64748b-f97316-f8fafc-0f172a — collection: https://brandsweets.com/palettes/clean
- **Sapphire & Gold** (jewel-tones, luxury, cool, elegant) — #1e3a8a, #c9a227, #0e7490, #f7f6f2, #111827 — Deep sapphire and gold with a teal — old-money jewel tones on an ivory ground; heraldic without a crest. — tool: https://brandsweets.com/palettes/new/1e3a8a-c9a227-0e7490-f7f6f2-111827 — 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/257598-9cb3c4-df4e69-1f232d-e9f1f0?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: "#257598" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.