Rules For Applying Mantel Brand Styles
When creating visual diagrams or frontend components, you can apply the following style guidelines to ensure consistency with the Mantel brand identity.
Colour Scheme You should aim to use the following primary colours from the Mantel brand palette. You may also use tints and shades of these colours as needed, but avoid introducing non-brand colours. General Design Principles
Mermaid Styles
Example Mermaid class definitions to apply Mantel brand styles to diagrams
classDef process fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef components fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef subprocess fill:#EEF9FD,stroke:#1E5E82,stroke-width:1px,color:#002A41,stroke-dasharray:5 5
classDef inputOutput fill:#81CCEA,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef api fill:#81CCEA,stroke:#002A41,stroke-width:2px,color:#002A41 classDef user fill:#81CCEA,stroke:#002A41,stroke-width:2px,color:#002A41 classDef external fill:#81CCEA,stroke:#002A41,stroke-width:2px,color:#002A41,stroke-dasharray:3 3
classDef decision fill:#D86E89,stroke:#002A41,stroke-width:2px,color:#FFFFFF classDef critical fill:#D86E89,stroke:#002A41,stroke-width:2px,color:#FFFFFF classDef error fill:#D86E89,stroke:#002A41,stroke-width:3px,color:#FFFFFF classDef warning fill:#D86E8955,stroke:#D86E89,stroke-width:2px,color:#002A41 classDef security fill:#D86E89,stroke:#002A41,stroke-width:3px,color:#FFFFFF,stroke-dasharray:2 1
classDef data fill:#002A41,stroke:#1E5E82,stroke-width:2px,color:#EEF9FD classDef storage fill:#002A41,stroke:#1E5E82,stroke-width:2px,color:#EEF9FD classDef database fill:#002A41,stroke:#1E5E82,stroke-width:2px,color:#EEF9FD classDef cache fill:#002A4166,stroke:#1E5E82,stroke-width:2px,color:#002A41
classDef start fill:#1E5E82,stroke:#002A41,stroke-width:3px,color:#EEF9FD classDef end fill:#002A41,stroke:#1E5E82,stroke-width:3px,color:#EEF9FD classDef success fill:#1E5E8233,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef pending fill:#81CCEA55,stroke:#81CCEA,stroke-width:2px,color:#002A41,stroke-dasharray:5 5 classDef active fill:#1E5E82,stroke:#002A41,stroke-width:2px,color:#EEF9FD classDef complete fill:#1E5E8255,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef disabled fill:#EEF9FD,stroke:#81CCEA66,stroke-width:1px,color:#81CCEA classDef inactive fill:#EEF9FD,stroke:#81CCEA66,stroke-width:1px,color:#81CCEA
classDef manual fill:#EEF9FD,stroke:#D86E89,stroke-width:2px,color:#002A41 classDef automated fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef async fill:#81CCEA33,stroke:#81CCEA,stroke-width:2px,color:#002A41,stroke-dasharray:8 3 classDef sync fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41
classDef system fill:#002A4133,stroke:#002A41,stroke-width:2px,color:#002A41 classDef network fill:#81CCEA33,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef queue fill:#81CCEA55,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef monitoring fill:#EEF9FD,stroke:#81CCEA,stroke-width:2px,color:#002A41,stroke-dasharray:1 1
classDef highlight fill:#D86E8922,stroke:#D86E89,stroke-width:3px,color:#002A41 classDef focus fill:#1E5E8244,stroke:#1E5E82,stroke-width:3px,color:#002A41 classDef selected fill:#81CCEA44,stroke:#002A41,stroke-width:3px,color:#002A41
classDef secondary fill:#EEF9FD,stroke:#81CCEA,stroke-width:2px,color:#002A41 classDef note fill:#EEF9FD,stroke:#81CCEA,stroke-width:1px,color:#1E5E82 classDef comment fill:#EEF9FD,stroke:#81CCEA,stroke-width:1px,color:#1E5E82,stroke-dasharray:3 3 classDef optional fill:#EEF9FD,stroke:#81CCEA,stroke-width:1px,color:#002A41,stroke-dasharray:5 5
classDef default fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41
Use 'process' for standard workflow steps Use 'subprocess' for nested or child processes Use 'components' for system components or modules Use 'inputOutput' for user interactions or system I/O Use 'user' for user/actor specific elements Use 'api' for external service connections Use 'external' for third-party systems or external dependencies Use 'decision' for branching logic or critical choices Use 'critical' for important warnings or highlights Use 'error' for error states or failure conditions Use 'warning' for caution states (less severe than errors) Use 'security' for security-related checkpoints or processes Use 'data' for data objects or data flow Use 'storage' or 'database' for persistent storage Use 'cache' for temporary storage or caching layers Use 'start' for process start points Use 'end' for process end points Use 'success' for successful completion states Use 'pending' for waiting or queued states Use 'active' for currently running processes Use 'complete' for finished processes Use 'disabled' or 'inactive' for unavailable elements Use 'manual' for human/manual processes Use 'automated' for automatic processes Use 'async' for asynchronous operations Use 'sync' for synchronous operations Use 'system' for internal system components Use 'network' for network-related elements Use 'queue' for message queues or buffers Use 'monitoring' for logging or monitoring components Use 'highlight' for temporarily emphasised elements Use 'focus' for elements requiring attention Use 'selected' for user-selected items Use 'secondary' for supporting or auxiliary elements Use 'note' for annotations or explanatory text Use 'comment' for inline comments or documentation Use 'optional' for optional steps or components
Last 2 digits represent opacity: FF=100%, CC=80%, 99=60%, 66=40%, 55=33%, 33=20%, 22=13% Used for: warning, cache, pending, disabled, system, network, queue, highlight states This creates visual hierarchy without introducing non-brand colours
Use instead of \n for line breaks Apply standard colour theme unless specified otherwise Do NOT use round brackets ( ) within item labels or descriptions Mermaid does not support unordered lists within item labels PlantUML Styles
Apply these colour definitions at the start of PlantUML diagrams
skinparam backgroundColor CLOUD skinparam defaultFontColor DEEP_OCEAN
' Activity Diagrams skinparam activity { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN StartColor OCEAN EndColor DEEP_OCEAN BarColor FLAMINGO DiamondBackgroundColor SKY_BLUE DiamondBorderColor OCEAN }
' Class Diagrams skinparam class { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN AttributeFontColor OCEAN StereotypeFontColor SKY_BLUE ArrowColor OCEAN HeaderBackgroundColor SKY_BLUE }
' Sequence Diagrams skinparam sequence { ParticipantBackgroundColor SKY_BLUE ParticipantBorderColor OCEAN ActorBackgroundColor CLOUD ActorBorderColor DEEP_OCEAN LifeLineBorderColor OCEAN ArrowColor OCEAN GroupBackgroundColor CLOUD GroupBorderColor SKY_BLUE NoteBackgroundColor CLOUD NoteBorderColor FLAMINGO }
' Component Diagrams skinparam component { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN InterfaceBackgroundColor SKY_BLUE InterfaceBorderColor DEEP_OCEAN }
' State Diagrams skinparam state { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN StartColor OCEAN EndColor DEEP_OCEAN AttributeFontColor OCEAN }
' Use Case Diagrams skinparam usecase { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN ActorBackgroundColor SKY_BLUE ActorBorderColor DEEP_OCEAN }
' Error/Warning States skinparam note { BackgroundColor<> FLAMINGO BorderColor<> DEEP_OCEAN FontColor<> CLOUD }
Frontend Component Styles
/ Semantic Mappings / --colour-primary: var(--brand-ocean); --colour-primary-dark: var(--brand-deep-ocean); --colour-secondary: var(--brand-sky-blue); --colour-accent: var(--brand-flamingo); --colour-background: var(--brand-cloud); --colour-surface: #FFFFFF;
/ Text Colours / --text-primary: var(--brand-deep-ocean); --text-secondary: var(--brand-ocean); --text-on-primary: var(--brand-cloud); --text-on-accent: #FFFFFF;
/ State Colours / --colour-error: var(--brand-flamingo); --colour-warning: var(--brand-flamingo); --colour-success: var(--brand-ocean); --colour-info: var(--brand-sky-blue);
/ Shadows and Overlays / --shadow-colour: rgba(0, 42, 65, 0.1); --overlay-light: rgba(238, 249, 253, 0.9); --overlay-dark: rgba(0, 42, 65, 0.8);
}
Secondary: - Background: Sky Blue (#81CCEA) - Text: Deep Ocean (#002A41) - Hover: Ocean (#1E5E82) with Cloud text - Border: Ocean (#1E5E82)
Accent/CTA: - Background: Flamingo (#D86E89) - Text: White (#FFFFFF) - Hover: Darker Flamingo (darken by 10%) - Border: none
Ghost/Outline: - Background: transparent - Text: Ocean (#1E5E82) - Hover: Cloud (#EEF9FD) background - Border: Ocean (#1E5E82)
Sidebar: - Background: Cloud (#EEF9FD) - Text: Deep Ocean (#002A41) - Active: Ocean (#1E5E82) with Cloud text - Hover: Sky Blue (#81CCEA) background
Labels: - Colour: Ocean (#1E5E82) - Required Indicator: Flamingo (#D86E89)
Highlighted Card: - Background: Cloud (#EEF9FD) - Border: Sky Blue (#81CCEA) - Shadow: rgba(30, 94, 130, 0.15)
Warning: - Background: Flamingo (#D86E89) at 5% opacity - Border: Flamingo (#D86E89) at 50% - Text: Deep Ocean (#002A41) - Icon: Flamingo (#D86E89)
Success: - Background: Ocean (#1E5E82) at 10% opacity - Border: Ocean (#1E5E82) - Text: Deep Ocean (#002A41) - Icon: Ocean (#1E5E82)
Info: - Background: Sky Blue (#81CCEA) at 10% opacity - Border: Sky Blue (#81CCEA) - Text: Deep Ocean (#002A41) - Icon: Sky Blue (#81CCEA)
Fonts & Typography / CSS / :root { font-family: Inter, sans-serif; font-feature-settings: 'liga' 1, 'calt' 1; / fix for Chrome / } @supports (font-variation-settings: normal) { :root { font-family: InterVariable, sans-serif; } }
This information should help you maintain visual consistency with the Mantel brand across diagrams and frontend components.