I use the latest version of both.
For Firefox in Linux I use
gfx.color_management.enablev4 = true
gfx.color_management.force srgb = false
gfx.color_management.mode = 1
gfx.color_management.native.srgb = true
gfx.color_management.rec2020 gamma as rec 709 = true
gfx.color_management.rec709 gamma as srgb = true
gfx.color_management.rendering_intent = 0
In Windows I use
gfx.color_management.enablev4 = false
gfx.color_management.force srgb = false
gfx.color_management.mode = 1
gfx.color_management.native.srgb = true
gfx.color_management.rec2020 gamma as rec 709 = true
gfx.color_management.rec709 gamma as srgb = true
gfx.color_management.rendering_intent = 1
For Chrome for both chrome://flags search for "Force Color Profile" and set that to sRGB.