-b Black point compensation.
-cNUM Precalculates transform (0=Off, 1=Normal, 2=Hi-res, 3=LoRes) [defaults to 1].
-dNUM Observer adaptation state (abs.col. only), (0..1.0, float value) [defaults to 0.0].
-e Encoded representation of numbers is not float (Option -w=use 16 bits, Option -x=hexadecimal).
-g Marks out-of-gamut colors on softproof.
-iprofile
Input profile (defaults to sRGB).
-l Transform by device-link profile.
-mNUM SoftProof intent (0,1,2,3) [defaults to 0].
-n Terse output, intended for pipe usage.
-oprofile
Output profile (defaults to sRGB).
-q Quantize CGATS to 8 bits.
-s Bounded mode.
-tNUM Rendering intent
0=Perceptual [default]
1=Relative colorimetric
2=Saturation
3=Absolute colorimetric
10=Perceptual preserving black ink
11=Relative colorimetric preserving black ink
12=Saturation preserving black ink
13=Perceptual preserving black plane
14=Relative colorimetric preserving black plane
15=Saturation preserving black plane
-vverbosity
Verbosity level, (0=None, 1=Normal, 2=High, 3=Very High) [defaults to 1].
-w Use 16 bits.
-x Hexadecimal.
You can use '*Lab' and '*xyz' as built-in profiles.