# #40b598

A color — neutral. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#40b598`
- RGB: rgb(64, 181, 152)
- HSL: hsl(165, 48%, 48%)
- OKLCH: oklch(0.7 0.113 173.3)
- Relative luminance: 0.364
- Nearest named color: Electra (#55b492, Δ 1.446) — https://brandsweets.com/colors/electra
- Moods: neutral
- Page: https://brandsweets.com/colors/40b598

## Tints & shades

- Tints (toward white): #4ec1a4, #60c7ae, #73ceb7, #86d5c1, #99dbcb, #ace2d4, #bfe8de, #d2efe8, #e5f6f1, #f7fcfb
- Shades (toward black): #3aa68b, #34937b, #2e846f, #28715f, #226252, #1d5346, #174036, #113129, #0b1e19, #050f0d

## Harmonies

- Complementary: #b5405d
- Analogous: #40b55d, #4098b5
- Triadic: #9840b5, #b59840
- Split-complementary: #b54098, #b55d40
- Tetradic: #5d40b5, #b5405d, #98b540

## Colors that go with #40b598

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 #40b598: softer than #000 and cool enough to feel like part of the same palette. Seen in: Lagoon (https://brandsweets.com/palettes/vivid#lagoon), N26 (https://brandsweets.com/colors/brands/n26-com), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Hot Pink** #ff69b4 [harmony, pool: complementary] — Hot Pink sits directly opposite #40b598 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/hotpink
- **Blue** #0000ff [pool] — 4 real palettes, including Unity's brand system and Canva's brand system put Blue beside #40b598, as the supporting colour. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #40b598: 4 real palettes, including Canva's brand system and Terminal, as the supporting colour. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Terminal (https://brandsweets.com/palettes/technical#terminal), Spotify (https://brandsweets.com/colors/brands/spotify), Arctic (https://brandsweets.com/palettes/clean#arctic). — https://brandsweets.com/colors/cornflowerblue
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Fintech Trust and Ford's brand system put Midnight Blue beside #40b598, as the text colour against it. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Ford (https://brandsweets.com/colors/brands/ford-com), Tide Pool (https://brandsweets.com/palettes/cool#tide-pool), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/midnightblue
- **Mustard Yellow** #ffdb58 [pool] — 5 real palettes, including Diner and Crayon Box put Mustard Yellow beside #40b598, as the accent. Seen in: Diner (https://brandsweets.com/palettes/vivid#diner), Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Lido (https://brandsweets.com/palettes/vivid#lido). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #40b598 in 6 real palettes, including Khan Academy's brand system and Brilliant's brand system, as the accent. Seen in: Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Docker (https://brandsweets.com/colors/brands/docker-com), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Slate Gray** #708090 [pool] — 4 real palettes, including Indigo SaaS and Ledger Dark put Slate Gray beside #40b598, as the supporting colour. Seen in: Indigo SaaS (https://brandsweets.com/palettes/modern#indigo-saas), Ledger Dark (https://brandsweets.com/palettes/dark#ledger-dark), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Graphite (https://brandsweets.com/palettes/technical#graphite). — https://brandsweets.com/colors/slategray

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

- On white (#ffffff): 2.54:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #2e846f (4.52:1); AA: background → #383838 (4.62:1); AAA: text → #226252 (7.15:1); AAA: background → #171717 (7.07:1)
- On black (#000000): 8.28:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/40b598-a2beba-d459b3-1f2b2d-e9f1eb?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: "#40b598" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.