Klein blue is invisible as text — here's how I worked around it

Short summary

The author created a terminal theme using Yves Klein's IKB blue pigment for better prose readability in Claude Code. Since pure IKB (#002FA7) is invisible as body text (APCA Lc -12), they split the color across two terminal slots: decorative use for pure pigment, readable text for a lifted Klein-family blue (#A8BEF0). The theme includes four accessibility-tuned variations.

• •Terminal theme built around Yves Klein's IKB ultramarine pigment to optimize Claude Code for long prose reading sessions
• •Pure IKB fails as readable text (APCA Lc -12); solution splits the color across ansi:blue (decorative) and ansi:blueBright (readable text)
• •Four theme variations available with strict APCA accessibility compliance; requires Claude Code's dark-ansi mode

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