Open Book
Also known as: Cotton Blossom, Sun’s Glory, Palais White, Trite White
As a pale take on orange, Open Book carries playful and vibrant energy that suits autumn palettes and friendly UI accents. Open Book plays well with white tones — the harmonies below show exactly which ones. For accessible text, use it on black or near-black backgrounds (18.60:1, passes WCAG AA) rather than white.
Open Book color codes
- HEX
- #F5F1E5
- RGB
- rgb(245, 241, 229)
- RGBA
- rgba(245, 241, 229, 1)
- HSL
- hsl(45, 44%, 93%)
- HSV
- hsv(45, 7%, 96%)
- CMYK
- cmyk(0%, 2%, 7%, 4%)
- LAB
- lab(95.2 -0.1 6.3)
- OKLCH
- oklch(95.8% 0.016 91.6)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
neutral, leaning warm
subtle yellow undertone in this near-neutral
Nearest standard colors
- CSS: oldlace#FDF5E6 · ΔE 2.1
- RAL 9001 — Cream#EFEBDC · ΔE 1.8 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck — Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where Open Book works
- Web & UI: Too light for text, ideal as a background wash that keeps a page from feeling sterile.
- Interiors: Wall-to-wall safe: it behaves like a white with personality, especially in north-facing rooms.
- Fashion: One garment in this color carries an outfit; two starts to compete.
- Branding: Best in a brand's supporting palette — packaging interiors, patterns, campaign accents.
- Web & UI: Use it decoratively — dividers, chart series, illustration accents — and let neutrals carry the type.
- Interiors: Use it where you want the eye to land — front door, built-ins, or one bold wall.
Copy as — every ecosystem
Tints, shades, and tones of Open Book
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Open Book by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Contrast & accessibility
Aa — on white
contrast 1.13:1
AA failAAA failAA large fail
Aa — on black
contrast 18.60:1
AA passAAA passAA large pass
Best text color on a Open Book background: #000000
Palettes featuring Open Book
Open Book with its complement
Soft neighbors of Open Book
Open Book triad
Similar colors
- Bianca#F4EFE0 · ΔE 1.3
- Marshmallow#F0EEE4 · ΔE 1.3
- Powdered#F9F2E7 · ΔE 1.7
- Palladian#EEE9DF · ΔE 2.0
- Fuji Peak#F6EEE2 · ΔE 2.0
- Cumulus#F3F3E6 · ΔE 2.1
Looking for maximum contrast instead? The complement of Open Book is closest to Cotton Boll.
Open Book FAQs
What color is Open Book?
Open Book is a light orange with the hex code #F5F1E5. In HSL terms it has a hue of 45°, 44% saturation, and 93% lightness.
What is the hex code for Open Book?
The hex code for Open Book is #F5F1E5. In RGB it's rgb(245, 241, 229), and in CMYK it's cmyk(0%, 2%, 7%, 4%).
What colors go well with Open Book?
Open Book pairs naturally with white tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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