Cobalt Signals beneath the Sea

[Color guide — coloring.today / cobalt-signals-beneath-the-sea]
Apply this palette to the design requested above. Preserve the requested layout, content, and interactions. If an explicit requirement conflicts with this color guide, identify the conflict instead of silently overriding it.

Text: Ice Signal #ECF7FF
Primary: Cobalt Current #234BCA
Highlight: Electric Cyan #5BE8FF
Accent: Periwinkle Beam #7E9BFF
Background: Deep Water #0B164A

Mood: Cold luminous blues. A crisp, energetic focal point.
Suggested uses: Developer tools
Application note: Place developer documentation on the deep-blue canvas. Use cobalt for code-example panels and cyan for a selected navigation marker; periwinkle can describe secondary diagrams.
Avoid: Do not imply that blue and cyan alone distinguish warnings from success. Label every status and keep luminous accents small. Ice Signal on Electric Cyan measures 1.34:1 and is unsuitable for small text. Ice Signal on Periwinkle Beam measures 2.41:1 and is unsuitable for small text.
Use approximately 65% background, 25% primary, and 10% highlight across large surfaces. These ratios are a starting point, not a rigid rule. Use text and accent colors according to their roles.

Keep the original HEX values. Choose readable text/background pairings without silently changing the palette. Do not introduce unrelated colors.

[Color guide — coloring.today / cobalt-signals-beneath-the-sea]
Apply this palette to the design requested above. Preserve the requested layout, content, and interactions. If an explicit requirement conflicts with this color guide, identify the conflict instead of silently overriding it.

Text: Ice Signal #ECF7FF
Primary: Cobalt Current #234BCA
Highlight: Electric Cyan #5BE8FF
Accent: Periwinkle Beam #7E9BFF
Background: Deep Water #0B164A

Mood: Cold luminous blues. A crisp, energetic focal point.
Suggested uses: Developer tools
Application note: Place developer documentation on the deep-blue canvas. Use cobalt for code-example panels and cyan for a selected navigation marker; periwinkle can describe secondary diagrams.
Avoid: Do not imply that blue and cyan alone distinguish warnings from success. Label every status and keep luminous accents small. Ice Signal on Electric Cyan measures 1.34:1 and is unsuitable for small text. Ice Signal on Periwinkle Beam measures 2.41:1 and is unsuitable for small text.
Use approximately 65% background, 25% primary, and 10% highlight across large surfaces. These ratios are a starting point, not a rigid rule. Use text and accent colors according to their roles.

Use these semantic tokens consistently. Keep the original HEX values.
:root {
  --color-text: #ECF7FF;
  --color-primary: #234BCA;
  --color-highlight: #5BE8FF;
  --color-accent: #7E9BFF;
  --color-background: #0B164A;
}
Background is the canvas, text is readable copy, primary is a key surface, highlight draws attention, and accent adds small secondary details.

[Color guide — coloring.today / cobalt-signals-beneath-the-sea]
Apply this palette to the design requested above. Preserve the requested layout, content, and interactions. If an explicit requirement conflicts with this color guide, identify the conflict instead of silently overriding it.

Text: Ice Signal #ECF7FF
Primary: Cobalt Current #234BCA
Highlight: Electric Cyan #5BE8FF
Accent: Periwinkle Beam #7E9BFF
Background: Deep Water #0B164A

Mood: Cold luminous blues. A crisp, energetic focal point.
Suggested uses: Developer tools
Application note: Place developer documentation on the deep-blue canvas. Use cobalt for code-example panels and cyan for a selected navigation marker; periwinkle can describe secondary diagrams.
Avoid: Do not imply that blue and cyan alone distinguish warnings from success. Label every status and keep luminous accents small. Ice Signal on Electric Cyan measures 1.34:1 and is unsuitable for small text. Ice Signal on Periwinkle Beam measures 2.41:1 and is unsuitable for small text.
Use approximately 65% background, 25% primary, and 10% highlight across large surfaces. These ratios are a starting point, not a rigid rule. Use text and accent colors according to their roles.

Text/background contrast: 15.73:1. This is one measured pair, not a guarantee for the whole palette. Check every actual text/background pairing against WCAG AA. Prefer readable combinations from the original colors, keep visible keyboard focus, and never communicate state through color alone. If no original pairing meets the requirement, propose a separately labeled derived color with its original HEX, proposed HEX, purpose and measured contrast. Never overwrite the source palette.