Color too dark custom checkbox color fill about imgui

[ruby3141]

It seems you're drawing something over the color-filled rectangle.

// Remove the conditional rendering based on hovered or held
RenderFrame(check_bb.Min, check_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);

Can you remove corresponding line and see if the color is still darker?

p.s. Imgui recommends not to use RenderFrame() on user code.

imgui/imgui_internal.h

Lines 3409 to 3417 in aa5a609

	// Render helpers
	// AVOID USING OUTSIDE OF IMGUI.CPP! NOT FOR PUBLIC CONSUMPTION. THOSE FUNCTIONS ARE A MESS. THEIR SIGNATURE AND BEHAVIOR WILL CHANGE, THEY NEED TO BE REFACTORED INTO SOMETHING DECENT.
	// NB: All position are in absolute pixels coordinates (we are never using window coordinates internally)
	IMGUI_API void RenderText(ImVec2 pos, const char* text, const char* text_end = NULL, bool hide_text_after_hash = true);
	IMGUI_API void RenderTextWrapped(ImVec2 pos, const char* text, const char* text_end, float wrap_width);
	IMGUI_API void RenderTextClipped(const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align = ImVec2(0, 0), const ImRect* clip_rect = NULL);
	IMGUI_API void RenderTextClippedEx(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align = ImVec2(0, 0), const ImRect* clip_rect = NULL);
	IMGUI_API void RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, float clip_max_x, float ellipsis_max_x, const char* text, const char* text_end, const ImVec2* text_size_if_known);
	IMGUI_API void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f);

[Raplhs]

if the green is not a good representation, here are some more screenshots for a bright pink, but comes out as purple.

coded rgb value

the real color

the color on imgui

[ocornut]

It seems you're drawing something over the color-filled rectangle.
RenderFrame(check_bb.Min, check_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding)

Correct, thanks for spotting that.

(also technically color space depends on your backend, swap-chain and other esoteric features that may be part of your app or driver so it's a wider issue and there's no such thing as a "real" color. But here your issue is clearly that you are drawing something over your color anyhow)