diff --git a/src/lib8/interpolate.rs b/src/lib8/interpolate.rs
index 0619ad4..804ffd0 100644
--- a/src/lib8/interpolate.rs
+++ b/src/lib8/interpolate.rs
@@ -3,7 +3,7 @@ use std::ops::BitOr;
 
 use rgb::Rgb;
 
-type Fract8 = u8;
+pub type Fract8 = u8;
 
 pub trait Fract8Ops {
     fn scale8(self, scale: Fract8) -> Self;